By Gaelle Gourmelon, Worldwatch Institute
More than 200 cities have set greenhouse gas reduction goals or targets. Action in these urban areas, which represent a combined population of 439 million people, could propel countries to meet their Intended Nationally Determined Contributions (INDCs)—the national greenhouse gas reduction pledges embodied in the Paris agreement.
According to Can a City Be Sustainable?, the latest edition of State of the World, cities and their inhabitants are playing a lead role in achieving global climate action goals.
“The challenge over the next several decades is an enormous one," write Michael Renner and Tom Prugh, contributing authors and co-directors of the report. “This requires not change around the edges, but a fundamental restructuring of how cities operate, how much they consume in resources and how much waste they produce, what they look like and how they are structured."
Growing numbers of cities have pledged themselves to climate commitments and sustainability goals. The C40 Cities Climate Leadership Group has expanded to more than 80 cities. The Compact of Mayors, launched at the 2014 United Nations Climate Summit, is the largest coalition of city leaders addressing climate change. ICLEI–Local Governments for Sustainability works with more than 1,000 cities around the world.
Cities today host more than half of the Earth's human beings and represent about 70 percent of global energy consumption and greenhouse gas emissions. If trends continue, urban populations are expected to increase to 6 billion by 2045, at which point two-thirds of all people will live in urban environments. “If current trends in urbanization continue unabated, urban energy use will more than triple, compared to 2005 levels, by 2050," write Renner and Prugh.
It is no surprise that cities collectively account for a large share of greenhouse gas emissions, because they concentrate economic activity. But cities vary widely in their per capita emissions. Rotterdam in the Netherlands, for example, emits 29.8 tons of carbon dioxide-equivalent per capita where Paris emits just 5.2 per capita (2005). Many variables, such as climate, urban form and primary energy source, affect a city's level of emissions. Economic factors, such as the wealth and income of residents and the level and structure of economic activity, also play a major role.
“Only demand-side policies that succeed in sharply reducing energy consumption in transport, buildings, waste handling and agriculture can address the urgent need to decarbonize energy," write Renner and Prugh. “It is cities that must step up to the front lines of that battle."
In conjunction with policy changes, cities' success will depend on having both comprehensive data and financial support. Current protocols, such as one developed by the World Resources Institute, C40 Cities and ICLEI, can be used to measure or estimate greenhouse gas emissions in cities worldwide. Financing urban sustainability may be easier in some cities than in others. Among the C40 cities, only three-quarters have budgetary control over property or municipal taxes. In poorer cities, multilateral development banks and a variety of donors may play an important role.
Gaelle Gourmelon is the communications director at the Worldwatch Institute. She has a background in biology and environmental health and focuses on how we can use social institutions and the planet's resources more effectively.
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A resident works in the vegetable garden of the Favela Nova Esperanca – a "green favela" which reuses everything and is subject to the ethics of permaculture – in the outskirts of Sao Paulo, Brazil, on Feb. 14, 2020. NELSON ALMEIDA / AFP via Getty Images
Farmers are the stewards of our planet's precious soil, one of the least understood and untapped defenses against climate change. Because of its massive potential to store carbon and foundational role in growing our food supply, soil makes farming a solution for both climate change and food security.
<h3>The Threat to Food Security</h3><p>Farming is capital-intensive and farmers are at the mercy of volatile global commodity markets, trade disputes, regulatory changes, weather, pests and disease. Factor in climate change and you can include droughts, floods and temperature shifts.</p><p>We need to change how we grow our food because:</p><ul><li>climate change will increasingly impact farm yields</li><li>how we farm can help mitigate climate change</li><li>helping our farmers unlock the full potential of soil will help them meet growing food demands while remaining profitable</li><li>restoring the carbon-holding potential of our soil combats climate change.</li></ul>
<h3>Soil and Climate Change</h3><p>The last few years have been among the hottest on <a href="https://www.statista.com/topics/1148/global-climate-change/" target="_blank">record</a>. As of May 2020, the concentration of carbon dioxide (CO2) in our atmosphere has been the highest it's been in human<a href="https://www.conservation.org/stories/11-climate-change-facts-you-need-to-know" target="_blank"> history</a>.</p><p>Studies show that soil removes about <a href="https://blogs.ei.columbia.edu/2018/02/21/can-soil-help-combat-climate-change/" target="_blank">25% </a>of the world's fossil-fuel emissions each year. This is done through carbon sequestration, a natural way of removing CO2 from the atmosphere through the soil with fewer impacts on land and water, less need for energy, and lower costs.</p><p>Soil can take in more CO2 from the atmosphere than it releases, making it a carbon sink. The carbon sink <a href="https://science.sciencemag.org/content/304/5677/1623" target="_blank">capacity </a>of the world's agricultural and degraded soils is 50 to 66% of what it has been historically. This means our soil can hold 42 to 78 gigatonnes more carbon. Increasing the amount of carbon in soil also makes it more productive for farmers.</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU1NDA2NS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYxNzQ1MDM3Nn0.iOtj5yyGSYAolZLt_qNlyAogrmplnXt80n6X29_FAtc/img.png?width=980" id="21e06" class="rm-shortcode" data-rm-shortcode-id="ce0c4641f16e22ee3ed042d4906a7683" data-rm-shortcode-name="rebelmouse-image" />
Soil can act as a natural "carbon sink." Climate Central, 2019
<p>Soil is also a method for water retention and purification, and returns oxygen to the atmosphere through plants. A single tablespoon of soil contains billions of microorganisms. In other words, the soil is alive. If we care for the soil on our farms it will greatly return the favor by providing us with the fibre, fuel and food we need, all while removing CO2 from the atmosphere.</p><h3>Farming With Attention to the Soil<br></h3><ul> <li>Carbon-smart farming: The amount of carbon sequestered in our soils can be increased by adopting the right management practices. Reducing tillage, planting cover crops and using organic matter amendments such as compost have been shown to increase the amount of carbon stored in the soil. Soil carbon also performs double duty as a resource in ensuring food security. Farmers can harness the power of carbon stored as soil organic matter, which is the fraction of soil composed of anything that once lived, such as decomposed plant and animal matter. Soil organic matter makes farmland more productive, reduces erosion and improves soil structure, which improves the quality of groundwater and surface waters. All of this reduces the negative impact of climate change across the entire ecosystem.<br></li><li>Reducing food waste at the farm level: <a href="http://www.ecowatch.com/tag/food-waste">Food waste</a> is a major source of greenhouse gas emissions, contributing 8% of total global emissions and at least 2.6% of all U.S. emissions. Specifically, a total of one-third of edible produce, or 33.7%, remains unharvested in fields only to get buried under. Furthermore, a significant amount of food waste is attributed to loss in crop production due to diseases – a loss of $U.S.200 billion globally per year.</li></ul><ul><li>Where Science & Technology can help: Our lack of understanding of our soil is hurting us. We need help from cutting-edge science and technology to measure and interpret the physical, chemical and biological properties of soil, which is collectively referred to as soil intelligence. Soil intelligence uncovers information such as which pathogens are lurking. It quantifies beneficial nutrients and determines the carbon-holding potential of soil. This information allows farmers to diagnose the health of the soil prior to planting their crops, enabling cost-saving decisions about what types of compost, fertilizers, pesticides, or other treatments to put in their soil, how to irrigate, or whether or not to switch crops entirely and prevent waste.<br></li><p>Every farm is unique and there is no one-size-fits-all approach. There is more biodiversity below ground than above ground. Carbon-smart farming yields comprehensive soil intelligence, which can help farmers and farm advisors "read their soil," make the right decisions for maximizing profits, and reduce waste. This information can help us better understand what the soil needs to feed our planet while continuing to sequester carbon.</p><p>Agriculture can significantly decrease humanity's carbon footprint. We must aid, nurture and care for our soil so that it can play this pivotal role in our fight against <a href="https://www.sciencedaily.com/releases/2020/07/200707140929.htm" target="_blank">climate change</a>. An investment in our soil now is an investment in the livelihood and health of generations to come.</p></ul><div></div>
<p><em>Reposted with permission from <a href="https://www.weforum.org/agenda/2020/08/how-carbon-smart-farming-tackles-climate-change/" target="_blank">World Economic Forum</a>.</em></p>From Your Site Articles
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How to Use Ventilation and Air Filtration to Prevent Coronavirus Spreading Indoors
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Health + Wellness
Once the virus escapes into the air inside a building, you have two options: bring in fresh air from outside or remove the virus from the air inside the building. Halfpoint Images / Getty Images
By Shelly Miller
The vast majority of SARS-CoV-2 transmission occurs indoors, most of it from the inhalation of airborne particles that contain the coronavirus. The best way to prevent the virus from spreading in a home or business would be to simply keep infected people away. But this is hard to do when an estimated 40% of cases are asymptomatic and asymptomatic people can still spread the coronavirus to others.
<p><a href="https://dx.doi.org/10.1126/science.abc6197" target="_blank">Masks do a decent job</a> at keeping the virus from spreading into the environment, but if an infected person is inside a building, inevitably some virus will escape into the air.</p><p>I am a <a href="https://scholar.google.com/citations?hl=en&user=rU-EO54AAAAJ" target="_blank">professor of mechanical engineering</a> at the University of Colorado Boulder. Much of my work has focused on how to control the transmission of <a href="https://doi.org/10.1111/j.1600-0668.1998.00002.x" target="_blank">airborne infectious diseases indoors</a>, and I've been asked by <a href="https://www.colorado.edu/today/newsletter/cbt-exec/covid-19-ready-campus-0" target="_blank">my own university</a>, my kids' schools and even the Alaska State Legislature for advice on how to make indoor spaces safe during this pandemic.</p><p>Once the virus escapes into the air inside a building, you have two options: bring in fresh air from outside or remove the virus from the air inside the building.</p>
It’s All About Fresh, Outside Air
<p>The safest indoor space is one that constantly has lots of <a href="https://www.epa.gov/indoor-air-quality-iaq/how-does-outdoor-air-enter-building" target="_blank">outside air</a> replacing the stale air inside.</p><p>In commercial buildings, <a href="https://www.ncbi.nlm.nih.gov/books/NBK143277/" target="_blank">outside air is usually pumped in</a> through heating, ventilating and air-conditioning (HVAC) systems. In <a href="https://www.epa.gov/indoor-air-quality-iaq/how-does-outdoor-air-enter-building" target="_blank">homes, outside air gets in</a> through open windows and doors, in addition to seeping in through various nooks and crannies.</p><p>Simply put, the more fresh, outside air inside a building, the better. Bringing in this air dilutes any contaminant in a building, whether a virus or a something else, and <a href="https://doi.org/10.1111/j.1600-0668.2010.00703.x" target="_blank">reduces the exposure of anyone inside</a>. Environmental engineers like me quantify how much outside air is getting into a building using a measure called the <a href="https://doi.org/10.1038/jes.2013.30" target="_blank">air exchange rate</a>. This number quantifies the number of times the air inside a building gets replaced with air from outside in an hour.</p><p>While the exact rate depends on the number of people and size of the room, most experts consider roughly <a href="https://doi.org/10.1034/j.1600-0668.2002.01145.x" target="_blank">six air changes an hour</a> to be good for a 10-foot-by-10-foot room with three to four people in it. In a pandemic this should be higher, with one study from 2016 suggesting that an exchange rate of nine times per hour <a href="https://doi.org/10.1177%2F1420326X16631596" target="_blank">reduced the spread of SARS, MERS and H1N1</a> in a Hong Kong hospital.</p><p>Many buildings in the U.S., <a href="https://doi.org/10.1111/ina.12403" target="_blank">especially schools</a>, do not meet recommended ventilation rates. Thankfully, it can be pretty easy to get more outside air into a building. Keeping <a href="https://doi.org/10.1016/S0960-1481(99)00012-9" target="_blank">windows and doors open</a> is a good start. Putting a box fan in a window blowing out can greatly increase air exchange too. In buildings that don't have operable windows, you can change the mechanical ventilation system to increase how much air it is pumping. But in any room, the more people inside, the faster the air should be replaced.</p>Using CO2 to Measure Air Circulation
<p>So how do you know if the room you're in has enough air exchange? It's actually a pretty hard number to calculate. But there's an easy-to-measure proxy that can help. Every time you exhale, you <a href="https://doi.org/10.1111/ina.12383" target="_blank">release CO2</a> into the air. Since the coronavirus is most often spread by breathing, coughing or talking, you can use <a href="https://pdfs.semanticscholar.org/dd7e/b2870c38f70e5285e5118ed6f158c091f7cf.pdf" target="_blank">CO2 levels</a> to see if the room is filling up with potentially infectious exhalations. The CO2 level lets you estimate if enough fresh outside air is getting in.</p><p>Outdoors, CO2 levels are just above 400 parts per million (ppm). A well ventilated room will have around <a href="https://doi.org/10.1111/j.1600-0668.1999.00003.x" target="_blank">800 ppm of CO2</a>. Any higher than that and it is a sign the room might need more ventilation.</p><p>Last year, researchers in Taiwan reported on the <a href="https://doi.org/10.1111/ina.12639" target="_blank">effect of ventilation on a tuberculosis outbreak</a> at Taipei University. Many of the rooms in the school were underventilated and had CO2 levels above 3,000 ppm. When engineers improved air circulation and got CO2 levels under 600 ppm, <a href="https://doi.org/10.1111/ina.12639" target="_blank">the outbreak completely stopped</a>. According to the research, the increase in ventilation was responsible for 97% of the decrease in transmission.</p><p>Since the coronavirus is spread through the air, higher CO2 levels in a room likely mean there is a <a href="https://doi.org/10.1111/ina.12639" target="_blank">higher chance of transmission</a> if an infected person is inside. Based on the study above, I recommend trying to keep the CO2 levels below 600 ppm. You can buy <a href="https://doi.org/10.5194/amt-7-3325-2014" target="_blank">good CO2 meters</a> for around $100 online; just make sure that they are accurate to within 50 ppm.</p>Air Cleaners
<p>If you are in a room that can't get enough outside air for dilution, consider an air cleaner, also commonly called air purifiers. These machines remove particles from the air, usually using <a href="https://doi.org/10.1016/j.cap.2005.07.013" target="_blank">a filter</a> made of tightly woven fibers. They can <a href="https://shellym80304.files.wordpress.com/2020/06/miller-leiden-et-al-1996.pdf" target="_blank">capture particles containing bacteria and viruses</a> and can help reduce disease transmission.</p><p>The U.S. Environmental Protection Agency says that <a href="https://www.epa.gov/coronavirus/air-cleaners-hvac-filters-and-coronavirus-covid-19" target="_blank">air cleaners can do this for the coronavirus</a>, but not all air cleaners are equal. Before you go out and buy one, there are few things to keep in mind.</p><p>The first thing to consider is <a href="https://shellym80304.files.wordpress.com/2020/06/air-cleaner-report.pdf" target="_blank">how effective an air cleaner's filter is</a>. Your best option is a cleaner that uses a high-efficiency particulate air (<a href="https://doi.org/10.1016/S0021-8502(05)80214-9" target="_blank">HEPA</a>) filter, as these remove more than <a href="https://doi.org/10.1063/1.2771421" target="_blank">99.97% of all particle sizes</a>.</p><p>The second thing to consider is how powerful the cleaner is. The bigger the room – or the more people in it – the more air needs to be cleaned. I worked with some colleagues at Harvard to put together a tool to help teachers and schools determine <a href="https://docs.google.com/spreadsheets/d/1NEhk1IEdbEi_b3wa6gI_zNs8uBJjlSS-86d4b7bW098/edit#gid=1275403500" target="_blank">how powerful of an air cleaner you need for different classroom sizes</a>.</p><p>The last thing to consider is the validity of the claims made by the company producing the air cleaner.</p><p>The Association of Home Appliance Manufacturers certifies air cleaners, so the AHAM Verifide seal is a good place to start. Additionally, the California Air Resources Board has a <a href="https://ww2.arb.ca.gov/our-work/programs/air-cleaners-ozone-products/california-certified-air-cleaning-devices" target="_blank">list of air cleaners</a> that are certified as safe and effective, though not all of them use HEPA filters.</p>Keep Air Fresh or Get Outside
<p>Both the <a href="https://www.who.int/news-room/commentaries/detail/transmission-of-sars-cov-2-implications-for-infection-prevention-precautions" target="_blank">World Health Organization</a> and <a href="https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/deciding-to-go-out.html" target="_blank">U.S. Centers for Disease Control and Prevention</a> say that poor ventilation increases the risk of transmitting the coronavirus.</p><p>If you are in control of your indoor environment, make sure you are getting enough fresh air from outside circulating into the building. A CO2 monitor can help give you a clue if there is enough ventilation, and if CO2 levels start going up, open some windows and <a href="https://www.advisory.com/daily-briefing/2020/07/17/outdoor-gathering" target="_blank">take a break outside</a>. If you can't get enough fresh air into a room, an air cleaner might be a good idea. If you do get an air cleaner, be aware that they don't remove CO2, so even though the air might be safer, CO2 levels could still be high in the room.</p><p>If you walk into a building and it feels hot, stuffy and crowded, chances are that there is not enough ventilation. Turn around and leave.</p><p>By paying attention to air circulation and filtration, improving them where you can and staying away from places where you can't, you can add another powerful tool to your anti-coronavirus toolkit.</p>From Your Site Articles
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California Senator Kamala Harris endorses Democratic presidential candidate Joe Biden at a campaign rally at Renaissance High School in Detroit, Michigan on March 9, 2020. JEFF KOWALSKY / AFP via Getty Images
Former Vice President Joe Biden made a historic announcement Tuesday when he named California Senator Kamala Harris as his running mate in the 2020 presidential election.
<p>Harris is now the first Black woman and the first person of Indian descent to run for national office for a major political party in the U.S., the League of Conservation Voters (LCV) pointed out. She also has a strong legacy of championing environmental justice throughout her career.</p><p>"Congratulations to Senator Kamala Harris, a true environmental champion!" LCV Action Fund Senior Vice President of Government Affairs Tiernan Sittenfeld said in a <a href="https://www.lcv.org/article/lcv-action-fund-statement-joes-bidens-vp-pick-senator-kamala-harris/" target="_blank">statement</a>.</p>
<div id="dd1a3" class="rm-shortcode" data-rm-shortcode-id="68af3c0112c4b985dfd2678d05cb02d9"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1293294015278985217" data-partner="rebelmouse"><div style="margin:1em 0">@JoeBiden @KamalaHarris Her stellar 91% lifetime score on LCV's Environmental Scorecard speaks for itself:… https://t.co/ZClO9w8soC</div> — LCV – League of Conservation Voters (@LCV – League of Conservation Voters)<a href="https://twitter.com/LCVoters/statuses/1293294015278985217">1597180296.0</a></blockquote></div>
<p>Harris has a lifetime LCV environmental voting score of 91 percent, better than Biden's 83 percent, <a href="https://insideclimatenews.org/news/11082020/kamala-harris-joe-biden-election-2020-climate-change" target="_blank">InsideClimate News noted</a>. Her selection won praise from several mainstream environmental groups, including the <a href="https://www.sierraclub.org/press-releases/2020/08/sierra-club-statement-biden-harris-2020" target="_blank">Sierra Club</a>, <a href="https://foeaction.org/news/friends-of-the-earth-action-applauds-the-historic-selection-of-kamala-harris-as-the-democratic-nominee-for-vice-president/" target="_blank">Friends of the Earth Action</a> and <a href="https://www.nrdcactionfund.org/kamala-harris-for-vice-president/?utm_source=tw&utm_medium=tweet&utm_campaign=AFciven" target="_blank">Natural Resources Defense Council Action Fund</a>.</p><p>Harris is a co-sponsor of the <a href="https://www.ecowatch.com/tag/green-new-deal" target="_self">Green New Deal</a> resolution, according to <a href="https://www.greentechmedia.com/articles/read/what-the-kamala-harris-vp-pick-means-for-bidens-energy-and-climate-platform" target="_blank">Greentech Media</a>, and promised to end the filibuster during her own presidential campaign so that the major climate legislation would have a chance at passing. Her unique contribution to the green movement, however, is her lifetime focus on environmental justice in particular. This is a key issue for the Biden campaign as a <a href="https://www.ecowatch.com/2020-election-climate-change-abortion-2638025748.html" target="_self">growing awareness</a> of the <a href="https://www.ecowatch.com/climate-change/" target="_self">climate crisis</a> corresponds with <a href="https://www.ecowatch.com/climate-activist-racial-justice-2646152490.html" target="_self">nationwide protests over racial injustice</a> and <a href="https://www.ecowatch.com/black--hispanic-americans-coronavirus-2645677258.html" target="_self">health disparities</a> made starker by the <a href="https://www.ecowatch.com/tag/coronavirus" target="_self">coronavirus</a> pandemic.</p>
<h3>Environmental Justice</h3><p>When Harris served as San Francisco district attorney, she created the office's first environmental justice unit in 2005, InsideClimate News reported.</p><p>"Crimes against the environment are crimes against communities, people who are often poor and disenfranchised," Harris said at the time, as <a href="https://grist.org/politics/kamala-harris-is-bidens-vp-pick-what-does-that-mean-for-the-climate/" target="_blank">Grist reported</a>.</p><p>She has continued championing the issue as a Senator. This summer, she introduced the Environmental Justice for All Act with Senators Tammy Duckworth and Cory Booker to ensure the federal government considers low income communities and communities of color when issuing permits, Greentech Media reported.</p><p>She also teamed up with New York Representative and Green New Deal champion <a href="https://www.ecowatch.com/tag/alexandria-ocasio-cortez" target="_self">Alexandria Ocasio Cortez</a> to introduce the <a href="https://www.ecowatch.com/harris-aoc-climate-legislation-2639501313.html" target="_self">Climate Equity Act</a>, which would create a new Office of Climate and Environmental Justice Accountability within the Office of Management and Budget to make sure that all environmental legislation and regulations are assessed based on their impact on frontline communities.</p><p>The duo first proposed the act last summer and formally introduced it last week.</p>
<div id="c4f11" class="rm-shortcode" data-rm-shortcode-id="67da6c1aa88b185f74fa063adbac316a"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1292181834571354115" data-partner="rebelmouse"><div style="margin:1em 0">This week, @RepAOC and I introduced the Climate Equity Act, legislation to ensure that we center the fight against… https://t.co/bpQi8aELxk</div> — Kamala Harris (@Kamala Harris)<a href="https://twitter.com/SenKamalaHarris/statuses/1292181834571354115">1596915131.0</a></blockquote></div>
<p>"COVID-19 has laid bare the realities of systemic racial, health, economic, and environmental injustices that persist in our country," Harris said in a statement about the new legislation reported by <a href="https://thehill.com/policy/energy-environment/510920-harris-aoc-push-climate-equity-bill-with-green-new-deal-roots" target="_blank">The Hill</a>. "The environment we live in cannot be disentangled from the rest of our lives, and it is more important than ever that we work toward a more just and equitable future."</p>
<h3>Climate Liability</h3><p>During her presidential campaign and her time as California attorney general, Harris also emphasized holding <a href="https://www.ecowatch.com/tag/fossil-fuel" target="_self">fossil fuel</a> companies accountable for their pollution, InsideClimate News pointed out.</p><p>As attorney general, she opposed a Chevron refinery expansion in Richmond, a majority Black and Hispanic community. She also sued Southern California Gas Co. over a methane blowout near Los Angeles.</p><p>Finally, she joined AGs United for Clean Power, a group of 17 attorneys general who said they would hold fossil fuel companies accountable for climate change. However, Harris never actually sued ExxonMobil, despite mistakenly claiming she had during a debate last year. She did repeatedly emphasize the need to hold fossil fuel companies responsible on the campaign trail and promised to have the Department of Justice launch an investigation.</p><p>"They are causing harm and death in communities. And there has been no accountability," she said at a CNN Town Hall on climate change.</p>
<h3>Weaknesses</h3><p>But Harris' prosecutorial record has another side. She has faced criticism from Black and progressive voters for her role as top prosecutor in a state that incarcerates African Americans at a rate five times higher than their share of the population. This has dampened her image somewhat with younger climate activists.</p><p>"I think Kamala Harris is a big win for women of color and environmental justice, however she definitely has some work to do in order to show our generation that she's become more progressive since her prosecutor days," 15-year-old climate activist and <a href="https://earthuprising.org/" target="_blank">Earth Uprising</a> founder Alexandria Villaseñor told InsideClimate News.</p><p>On the environmental front, Harris' weaknesses include the fact that she was one of the last Democratic candidates to unveil a climate plan, and, when she did, it did not include a ban on <a href="https://www.ecowatch.com/fracking/" target="_self">fracking</a>, Grist pointed out. She has also accepted donations from fossil fuel companies in the past, though she pledged not to do so this election.</p><p>Weighing Harris' legacy, <a href="https://www.sunrisemovement.org/" target="_blank">Sunrise Movement</a> co-founder Varshini Prakash said the Senator was willing to grow in response to criticism.</p><p>"Throughout the course of her campaign for President, Senator Kamala Harris showed her responsiveness to activist and movement pressure to make climate a top priority, and demonstrated her willingness to be held accountable," Prakash said in a statement reported by Greentech Media. "I'm also deeply aware of Senator Harris' record as a prosecutor and the ways in which a number of her decisions harmed communities of color, which our movement has spoken about in the past and will continue to."</p>
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An aerial view taken on August 8, 2020 shows a large patch of leaked oil from the MV Wakashio off the coast of Mauritius. STRINGER / AFP / Getty Images
The tiny island nation of Mauritius, known for its turquoise waters, vibrant corals and diverse ecosystem, is in the midst of an environmental catastrophe after a Japanese cargo ship struck a reef off the country's coast two weeks ago. That ship, which is still intact, has since leaked more than 1,000 metric tons of oil into the Indian Ocean. Now, a greater threat looms, as a growing crack in the ship's hull might cause the ship to split in two and release the rest of the ship's oil into the water, NPR reported.
On Friday, Prime Minister Pravind Jugnauth declared a state of environmental emergency.
France has sent a military aircraft carrying pollution control equipment from the nearby island of Reunion to help mitigate the disaster. Additionally, Japan has sent a six-member team to assist as well, the BBC reported.
The teams are working to pump out the remaining oil from the ship, which was believed to be carrying 4,000 metric tons of fuel.
"We are expecting the worst," Mauritian Wildlife Foundation manager Jean Hugues Gardenne said on Monday, The Weather Channel reported. "The ship is showing really big, big cracks. We believe it will break into two at any time, at the maximum within two days. So much oil remains in the ship, so the disaster could become much worse. It's important to remove as much oil as possible. Helicopters are taking out the fuel little by little, ton by ton."
Sunil Dowarkasing, a former strategist for Greenpeace International and former member of parliament in Mauritius, told CNN that the ship contains three oil tanks. The one that ruptured has stopped leaking oil, giving disaster crews time to use a tanker and salvage teams to remove oil from the other two tanks before the ship splits.
By the end of Tuesday, the crew had removed over 1,000 metric tons of oil from the ship, NPR reported, leaving about 1,800 metric tons of oil and diesel, according to the company that owns the ship. So far the frantic efforts are paying off. Earlier today, a local police chief told BBC that there were still 700 metric tons aboard the ship.
The oil spill has already killed marine animals and turned the turquoise water black. It's also threatening the long-term viability of the country's coral reefs, lagoons and shoreline, NBC News reported.
"We are starting to see dead fish. We are starting to see animals like crabs covered in oil, we are starting to see seabirds covered in oil, including some which could not be rescued," said Vikash Tatayah, conservation director at Mauritius Wildlife Foundation, according to The Weather Channel.
While the Mauritian authorities have asked residents to leave the clean-up to officials, locals have organized to help.
"People have realized that they need to take things into their hands. We are here to protect our fauna and flora," environmental activist Ashok Subron said in an AFP story.
Reuters reported that sugar cane leaves, plastic bottles and human hair donated by locals are being sewn into makeshift booms.
Human hair absorbs oil, but not water, so scientists have long suggested it as a material to contain oil spills, Gizmodo reported. Mauritians are currently collecting as much human hair as possible to contribute to the booms, which consist of tubes and nets that float on the water to trap the oil.
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A northern mockingbird on June 24, 2016. Renee Grayson / CC BY 2.0
Environmentalists and ornithologists found a friend in a federal court on Tuesday when a judge struck down a Trump administration attempt to allow polluters to kill birds without repercussions through rewriting the Migratory Treaty Bird Act (MBTA).
<p>The issue at the heart of the case is that the Trump administration intended to change decades of established policy to allow the incidental slaughter of migratory birds as long as an individual or corporation could prove they did not intend to intentionally kill the bird, according to The Washington Post.</p><p>In a scathing decision, U.S. District Court Judge Valerie Caproni questioned the humanity of an administration that would interpret the "taking" and "killing" of birds in the Migratory Bird Treaty Act as only applying to actions that specifically targeted birds.</p><p>In upholding the longstanding interpretation of the century-old Migratory Bird Treaty Act that energy companies and other businesses have opposed as too broad, she quoted the iconic American novel <em>To Kill a Mocking Bird</em>, as <a href="https://www.reuters.com/article/us-environment-birds-trump/u-s-court-blocks-trump-administrations-relaxation-of-migratory-bird-safeguards-idUSKCN2580EK" target="_blank">Reuters</a> reported.</p><p>"It is not only a sin to kill a mockingbird, it is also a crime," the judge wrote, according to Reuters.</p><p>"That has been the letter of the law for the past century. But if the Department of the Interior has its way, many mockingbirds and other migratory birds that delight people and support ecosystems throughout the country will be killed without legal consequence."</p>
<p>As <a href="https://thehill.com/policy/energy-environment/511603-interior-memo-scaling-back-bird-protections-is-contrary-to-law" target="_blank">The Hill</a> noted, the Migratory Bird Treaty Act (MBTA) has for over 100 years offered protections to 1,000 different types of birds, instigating penalties for companies whose projects or infrastructure harm them. Yet, in 2017, the Interior Department's Solicitor Daniel Jorjani, a former Koch Industries employee, advised punishing the oil and gas industry, construction companies, and others only if their work intentionally kills birds, effectively ending the spirit of the law that asks for the migratory patterns of birds to be considered when developing a project.</p><p>"The opinion freezes the MBTA in time as a hunting-regulation statute, preventing it from addressing modern threats to migrating bird populations," Caproni wrote in a decision vacating the opinion, calling it "an unpersuasive interpretation of the MBTA's unambiguous prohibition on killing protected birds," according to The Hill.</p>
<p>As The Washington Post pointed out, the opinion of Jorjani would have meant that BP, the company responsible for the 2010 Deepwater Horizon spill in the Gulf of Mexico, would not be responsible for the death of roughly 1 million birds that died due to that accident. The law would also mean that if an oil company forgot to cover a tar pit and birds landed it and died, the company would not be responsible, upending decades of existing regulations.</p><p>The opinion was hailed by environmentalists and by advocacy groups. "We're elated to see this terrible opinion overturned at a time when scientists are warning that we've lost as many as 3 billion birds [in North America] in the last 50 years," said Noah Greenwald, endangered species director at the Center for Biological Diversity, one of the groups that sued over the opinion, as The Hill reported. "To relax rules, to have the unhampered killing or birds didn't make any sense [and] was terrible and cruel really."</p><p>"Today's commonsense ruling is a much-needed win for migratory birds and the millions of Americans who cherish them," said Mike Parr, president of American Bird Conservancy, in a <a href="https://www.nrdc.org/media/2020/200811-0" target="_blank">statement</a>. "The Migratory Bird Treaty Act is one of our nation's most important environmental laws, and has spurred industry innovation to protect birds, such as screening off toxic waste pits and marking power lines to reduce collisions. This decision represents the next vital step on the path to restoring our nation's declining bird populations and is a major victory for birds and the environment."</p>
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A spiny dogfish shark swims in the Olympic Coast National Marine Sanctuary off the coast of Washington. NOAA / Wikimedia Commons
By Elizabeth Claire Alberts
There are trillions of microplastics in the ocean — they bob on the surface, float through the water column, and accumulate in clusters on the seafloor. With plastic being so ubiquitous, it's inevitable that marine organisms, such as sharks, will ingest them.
<p>A new study in <a href="https://www.nature.com/articles/s41598-020-68680-1" target="_blank"><em>Scientific Reports</em></a> investigated microplastic ingestion in four species of demersal sharks found in the North Atlantic Ocean, which were captured as bycatch by a local fishery in Penzance, U.K. A team of six researchers, from the University of Exeter and the University of Leeds, examined the stomachs and digestive tracts of 46 sharks, and found that 67% contained microplastics. A total of 379 microplastics — plastic particles or fibers smaller than 5 millimeters, or a fifth of an inch — were found in the sampled sharks.</p><p>Many of the plastic fibers were synthetic cellulose, the material found in polyester clothing and hygiene products such as face masks, which have become increasingly prevalent during the COVID-19 pandemic.</p><p>"I think there is definitely some cause for concern," Kristian Parton, lead author of the study and researcher at the University of Exeter's Centre for Ecology and Conservation, told Mongabay in an email. "Although many of the particles ingested by these sharks will be excreted eventually, they potentially remain inside the body long enough for inorganic pollutants and chemicals (attached to the particles), to enter into the bodies of these sharks."</p><p>Parton said he found it surprising that sharks living off the coast of Penzance in Cornwall, on the southwestern tip of Britain, would contain so many plastic particles.</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU1MzQ1OS9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY0NzA2MDY3OH0.SlQlPtL4cHm44O168ztiJ2u5lehmndyIh5eeegL6ozk/img.png?width=980" id="35461" class="rm-shortcode" data-rm-shortcode-id="5f385b06f1e066393241e385c1356746" data-rm-shortcode-name="rebelmouse-image" />
Polyproylene fibers found in one of the sampled sharks. Kristian Parton
<p>"I actually didn't expect to find as many as we did in these sharks," he said. "The waters around Cornwall are thought to be some of the most beautiful in the U.K., and so I didn't think there would be much pollution."</p><p>Parton's co-author, Tamara Galloway, holds a similar view.</p><p>"We were not expecting to find microfibers from textiles in so many of our native shark species," Galloway, a marine biologist and professor of ecotoxicology at the University of Exeter, said in a statement. "Our study highlights how important it is to think before we throw things away."</p><p>Demersal sharks can be found at depths of 5 to 900 meters (16 to 3,000 feet), although they tend to live and feed in the demersal zone of the ocean, which is near the seafloor. The four species of demersal sharks used in this study included the small-spotted catshark (<em>Scyliorhinus canicula</em>), starry smooth-hound (<em>Mustelus asterias</em>), spiny dogfish (<em>Squalus acanthias</em>) and bull huss (<em>Scyliorhinus stellaris</em>).</p>
<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU1MzY3OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1NTc5MTE1OH0.5NXu7626Tvj2QfOU8pqFb0287d2sh1SLRD4_CwlhbIA/img.jpg?width=980" id="08a24" class="rm-shortcode" data-rm-shortcode-id="00d5d52c34bd112e0f91317709c5c82d" data-rm-shortcode-name="rebelmouse-image" />
Spiny dogfish. NOAA / Wikimedia Commons
<p>"There appear to be two routes for these particles to end up in the sharks," Parton said. "The first through their food source [such as] crustaceans. Their prey may already contain these fibers, and consequently it's passed to the shark through bioaccumulation up the food chain. The second pathway is direct ingestion from the sediment. As these sharks feed, they'll often suck up sediment into their mouths, some of this is expelled straight away, although some is swallowed, therefore fibers and particles that may have sunk down into the seabed may be directly ingested from the surrounding sediment as these sharks feed."</p><p>Some sharks only contained a few plastic particles, but others contained dozens. The larger the shark, the more plastic was in it, the findings suggested. The highest number of microplastics was found in an individual bull huss, which had 154 polypropylene fibers inside its stomach and intestines.</p><p>"It's perhaps likely this individual shark had swallowed a larger piece of fishing rope/netting and this has broken down during digestive processes within the shark, and also broken down into smaller pieces during our analysis," Parton said.</p><img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU1MzQ4NC9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYyODY1MDA3MH0.rtDtmMS6OqC1NXKRw_Eu4GTdCs3DFjBQAcLBWc09FXE/img.png?width=980" id="8d923" class="rm-shortcode" data-rm-shortcode-id="29cf49b2e78f250aafc9f2354aa7c728" data-rm-shortcode-name="rebelmouse-image" />
Lesser-spotted dogfish caught as bycatch. Kristian Parton
<p>While this study only examined the stomach and digestive tracts of demersal sharks, Parton says it's possible that plastic would be present in other parts of the sharks' bodies, such as the liver and muscle tissue. However, more research would be needed to prove this.</p><p>At the moment, there is also limited understanding of how microplastic ingestion would impact a shark's health, although microplastics are known to negatively influence feeding behavior, development, reproduction and life span of zooplankton and crustaceans.</p><p>"If we can show that these fibers contain inorganic pollutants attached to them, then that could have real consequences for these shark species at a cellular level, impacting various internal body systems," Parton said.</p><img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yMzU1MzQ5Ny9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTYyNjkxMjI5MX0.VUAa_0t4_TRDodF5E8V80QF6hdrwvoy8WGbyIxtomqQ/img.png?width=980" id="a6f5c" class="rm-shortcode" data-rm-shortcode-id="b8deabdf3be7d576501f0c4f83810289" data-rm-shortcode-name="rebelmouse-image" />
<p><em>Reposted with permission from <a href="https://news.mongabay.com/2020/08/sharks-contaminated-with-plastic-are-cause-for-concern/" target="_blank">Mongabay.</a></em></p>Parton in the lab. Kristian Parton
<p>This new study demonstrates how pervasive and destructive plastic pollution can be in the marine environment, according to Will McCallum, head of oceans for Greenpeace U.K.</p><p>"Our addiction to plastics combined with the lack of mechanisms to protect our oceans is suffocating marine life," McCallum said in a statement. "Sharks sit on top of the marine food web and play a vital role in ocean ecosystems. Yet, they are completely exposed to pollutants and other human impactful activities. We need to stop producing so much plastic and create a network of ocean sanctuaries to give wildlife space to recover. The ocean is not our dump, marine life deserves better than plastic."</p>From Your Site Articles
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A "vessel of opportunity" skims oil spilled after the Deepwater Horizon well blowout in the Gulf of Mexico in April 2010. NOAA / Flickr / CC by 2.0
By Loveday Wright and Stuart Braun
After a Japanese-owned oil tanker struck a reef off Mauritius on July 25, a prolonged period of inaction is threatening to become an ecological disaster.
<p>Carrying nearly 4,000 metric tons of fuel oil, the tanker ran aground near Pointe d'Esny on the island in the Indian Ocean.</p><p>"Local authorities failed to do enough to prevent what is now the worst ecological disaster in Mauritius," blogger Ish Sookun wrote in a post on August 8. "They started putting buoys and barriers to protect the shore only after the first signs of the oil spill became apparent."</p>
<div id="9dc9c" class="rm-shortcode" data-rm-shortcode-id="d314aebd413c6c282d96a9338f135bf8"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1291316001984872450" data-partner="rebelmouse"><div style="margin:1em 0">#Wakashio has been wrecked near the #Mauritian lagoon of Pointe d'Esny for the past 12 days. No visibly concrete ac… https://t.co/CuOQK1s7GS</div> — The Logical Mauritian (@The Logical Mauritian)<a href="https://twitter.com/mauritianlogic/statuses/1291316001984872450">1596708701.0</a></blockquote></div><p>By Tuesday, over two weeks after the accident, more than 1,000 tons of fuel had leaked from a crack in the vessel's hull, with the Mauritius government declaring a state of environmental emergency.</p><p>French President Emmanuel Macron responded to calls for international help, sending military aircraft from the neighboring island of Reunion carrying pollution-control equipment and a naval vessel carrying booms and absorbents. According to Mitsui OSK Lines, the company that owns the vessel, some 1,000 tons of oil have been recovered from the ship, and a further 500 from the water. Around 1,500 tons remain on board.</p><p>"Thousands of species around the pristine lagoons of Blue Bay, Pointe d'Esny and Mahebourg are at risk of drowning in a sea of pollution, with dire consequences for Mauritius' economy, food security and health," said Greenpeace in a statement.</p><p>The community has taken matters into its own hands, with hundreds of volunteers building sugar cane pulp buoys and placing them in the water "to try to absorb and contain the oil which had already spread in our lagoons," Sookun reported.</p>
<div id="bb0a7" class="rm-shortcode" data-rm-shortcode-id="e5aefc0fff61ab1aea2f4b03c5399864"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1291765757013983238" data-partner="rebelmouse"><div style="margin:1em 0">The #oilspill is devastating but I want to honour the community mobilisation at the Mahebourg waterfront today (to… https://t.co/UWFkZFdjdi</div> — Fabiola Monty (@Fabiola Monty)<a href="https://twitter.com/LFabiolaMonty/statuses/1291765757013983238">1596815930.0</a></blockquote></div><p>"Booms are made of nylon mesh filled with #sugarcane straws all hand-stitched by Mauritian volunteers, empty plastic bottles used as buoys," described Mauritian journalist Zeenat Hansrod in a tweet. </p>
<div id="1c4fc" class="rm-shortcode" data-rm-shortcode-id="ba90d41985996749adf21e608ae25347"><blockquote class="twitter-tweet twitter-custom-tweet" data-twitter-tweet-id="1292349790550994944" data-partner="rebelmouse"><div style="margin:1em 0">Floating #booms are used as barriers to contain the #Wakashio #oilspill in #Mauritius #IleMaurice
In BlueBay, Point… https://t.co/chpuauutrW</div> — zeenat hansrod (@zeenat hansrod)<a href="https://twitter.com/zxnt/statuses/1292349790550994944">1596955175.0</a></blockquote></div>
How to Tackle Oil Spills
<p>The method for tackling oil spills depends on several factors, including the type and amount of oil in question, location and weather conditions.</p><p>"Once the oil comes to shore, the more intensive the cleaning technique. You can risk causing further damage," said Nicky Cariglia, an independent consultant at Marittima, who specializes in marine pollution. </p><p>"If you wanted to remove all traces of oil, the techniques available become increasingly aggressive the less oil that remains. In mangroves, you would have the added risk of causing damage by trampling," Cariglia told DW. Highly sensitive mangrove ecosystems line the Mauritius east coast that is threatened by the current spill.</p><p>Because oil normally has a lower density than water, it floats on the surface of the ocean. This means that for clean-up action to be most effective, it should happen very quickly after a spill, before the oil disperses. </p><h3>1. Scooping It All Up</h3><p>One method of controlling oil spills at sea, which was used after the <a href="https://www.dw.com/en/france-brittany-coast-threatened-by-oil-spill-after-cargo-ship-sinks/a-47903844" target="_blank">Grande America cargo vessel sank in March 2019 </a> some 300 kilometers (186 miles) off the French coast, is essentially scooping up the oil from the water's surface.</p><p>This is done using so-called booms, which act like a barrier to prevent the oil from spreading. Once it's contained, boats equipped with so-called skimmer machines can suck up the oil and separate it from the water. After being processed, the oil can even be re-used.</p><p>It seems like a simple method, but it only works when the oil is in one place — and under the right conditions.</p><p><span></span>"Encountering enough oil can be difficult," said response adviser Cariglia. When that's the case, the specialized vessels needed for the process can also make this an expensive and logistically challenging method.</p><h3>2. Burning Oil Off Water</h3><p>In certain conditions, burning the oil off the water's surface can be the most appropriate method. In arctic or ice-covered waters, for example, it might be the only option.</p><p>In situ burning (ISB) would also be used to tackle an uncontrolled oil leak, where a lot of oil is spilling fast. When the <a href="https://www.dw.com/en/the-legacy-of-deepwater-horizon-what-researchers-learned-about-oil-spills/a-37662810" target="_blank">Deepwater Horizon offshore oil rig caught fire and sank</a> in April 2010, oil gushed from the seabed causing the largest accidental oil spill in history. ISB proved to be a highly effective technique in responding to the disaster.</p><p><span></span>But the method also produces toxic fumes which can have a negative impact on the environment.</p><p>And it comes with challenges, too. "It can be difficult to herd enough oil to make it thick enough to burn," Cariglia said. "If the oil had dispersed over many days, it would not be an option."</p>
<h3>3. Soaking Up Oil </h3><p>Absorbents can be kinder to the environment: They act like a sponge to soak up the spilled oil. But they're more useful for clearing small amounts of oil on land, and are not usually effective in tackling a spill out at sea. In fact, employing these materials on the water can create further pollution.</p><p>"Recovering and disposing of these oiled materials requires a lot of energy," Cariglia said. "There's a risk that oiled debris will get lost at sea."</p><p>Experts also disagree over the effectiveness of different absorbent materials, which can range from natural products such as straw to highly engineered synthetics developed by scientists for the purpose of tackling oil spills.</p><p>Cariglia is wary of solutions purporting to suck up slicks. "It's not that they don't work," she said. "In lab experiments, they can work very well. But in real life, the oil has spread at sea."</p><h3>4. Letting Nature Take Care of Itself</h3><p>When the area of the oil spill is difficult to reach or very far out to sea, nature itself can help tackle the issue. Wind and waves will naturally disperse the oil over time, parts of it will evaporate, and naturally occurring microbes will also do their work to start breaking down the oil.</p><p>But this is a slow and unreliable process that needs to be closely monitored and "should not be confused with 'sitting down and doing nothing,'" according to Marine Insight, a maritime industry information site.</p><p>Chemical agents can also be used to aid this process. Cariglia is keen to allay environmental fears. "Toxicity tests are designed so that the only things that are approved are milder than the soap you would use at home," she told DW.</p><p>Though the dispersants themselves are not toxic, environmental problems can occur when they are used in sheltered or shallow locations. In that situation, using dispersants can mean that the oil spreads around more of the delicate marine environment. "For example, in locations where there are coral reefs, it would be better if the oil stayed on the surface," Cariglia said.</p><p>When it comes to tackling oil spills, she added, "there is no single miracle cure." </p>
<p><em>Reposted with permission from </em><em><a href="https://www.dw.com/en/mauritius-oil-spill-disaster-tanker/a-48095315?maca=en-VAM_volltext_ecowatch-28485-html-copypaste" target="_blank">Deutsche Welle</a>.</em><a href="https://www.ecowatch.com/r/entryeditor/2646956969#/" target="_self"></a></p>From Your Site Articles
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