First-of-Its-Kind Study Finds Racial Gap Between Who Causes Air Pollution and Who Breathes It
Studies have long shown that minority communities in the U.S.are disproportionately exposed to harmful pollution. But a study published Monday reveals a new level of environmental injustice: they are also less likely to contribute to it.
The first-of-its-kind study, published in the Proceedings of the National Academy of Sciences, found that black and Hispanic Americans breathe in large amounts of dangerous air pollution that is mainly caused by the actions of non-Hispanic whites.
"Even though minorities are contributing less to the overall problem of air pollution, they are affected by it more," study co-author and University of Minnesota engineering professor Jason Hill, who is white, told USA Today. "Is it fair (that) I create more pollution and somebody else is disproportionately affected by it?"
Here is our paper on #pollution #inequity in @PNASNews: "Inequity in consumption of goods and services adds to raci… https://t.co/7zcTv71AuN— Jason Hill (@Jason Hill)1552393512.0
The study focused on the creation of and exposure to particulate matter 2.5 (PM2.5), a dangerous form of air pollution that kills more than 100,000 Americans each year from heart disease, lung cancer and other ailments. It found that white Americans have a "pollution advantage," that is, they are exposed to about 17 percent less air pollution than their consumption causes. Black and Hispanic Americans, on the other hand, have a "pollution burden." Black Americans are exposed to 56 percent more air pollution than their consumption generates, and Hispanic Americans are exposed to 63 percent more, a University of Minnesota press release republished by ScienceDaily explained.
To track which groups were responsible for and exposed to what pollution, the research team, which included scientists from the University of Minnesota and University of Washington, looked at a wide variety of data. This included, according to NPR:
2. Which racial groups lived near different pollution sources.
3. How many early deaths each year were caused by each polluter.
4. Bureau of Labor Statistics data showing how much different groups spend in certain sectors of the economy like food, energy or entertainment.
5. Bureau of Economic Analysis data tracing items consumed back to their source, where the pollution was originally emitted.
The disparity between how much White Americans contributed to pollution vs. Black and Hispanic Americans didn't come down to particular consumption choices, study lead author and University of Washington postdoctoral researcher Christopher Tessum told NPR. Whites just spent more across the board.
The disparities are related to the country's ongoing struggle with racial inequality, the press release explained, which has led to a situation where White people are generally wealthier and minorities are more likely to live near polluted areas, sometimes because of the legacy of segregation.
"These findings confirm what most grassroots environmental justice leaders have known for decades, 'whites are dumping their pollution on poor people and people of color,'" Texas Southern University Public Affairs Prof. Robert Bullard, who was not involved with the study, told USA Today.
The researchers did find that PM2.5 exposure had decreased around 50 percent between 2003 and 2013, but that the inequality in exposure had remained constant, the press release said.
"What is especially surprising is just how large pollution inequity is and has been for well over a decade," Hill told USA Today.
The researchers hope that their formula can be applied to study other environmental justice issues.
"The approach we establish in this study could be extended to other pollutants, locations and groupings of people," study author and Civil and Environmental Engineering Professor at the University of Washington Julian Marshall said. "When it comes to determining who causes air pollution — and who breathes that pollution — this research is just the beginning."
By Jason Farley
COVID-19 has disrupted our daily lives, and it is poised to completely disrupt the holiday season. As people make holiday plans and think about ways to reduce the risks to their loved ones, a strategy is essential.
Are masks really necessary at family gatherings?<p>If you're gathering with friends and family who don't live in your home, yes. Just because you're with people you know doesn't mean you're safe from the coronavirus. Infection rates are <a href="https://coronavirus.jhu.edu/data/new-cases-50-states" target="_blank" rel="noopener noreferrer">higher now than they have ever been</a> in the U.S., and <a href="https://youtu.be/ehdgceGzQxs" target="_blank" rel="noopener noreferrer">small gatherings have been a source</a> of viral spread. All it takes is one infected person who doesn't know they have the coronavirus to infect others.</p><p>Remember, people can be <a href="https://medical.mit.edu/covid-19-updates/2020/07/how-long-symptom-onset-person-contagious" target="_blank" rel="noopener noreferrer">contagious two to three days</a> before symptoms show – that's one thing that makes this virus so hard to stop. And it's why, even if you feel fine, you should wear a mask.</p><p>The Centers for Disease Control and Prevention now estimates that when both people are wearing masks, the <a href="https://www.cdc.gov/coronavirus/2019-ncov/more/masking-science-sars-cov2.html" target="_blank">likelihood of infection is low</a>.</p>
Who am I protecting when I wear a mask?<p>In a word: everyone. The coronavirus <a href="https://theconversation.com/aerosols-are-a-bigger-coronavirus-threat-than-who-guidelines-suggest-heres-what-you-need-to-know-142233" target="_blank">spreads through respiratory droplets</a> that you send out into the air when you talk, sing or even just breathe. The tiniest of these droplets can float on air currents for long periods.</p><p>Face masks stop many of those droplets, reducing the amount of virus in the air. That lowers your chances of getting infected, and it also lowers the chances that you'll infect someone else.</p><p><a href="https://www.cdc.gov/coronavirus/2019-ncov/more/masking-science-sars-cov2.html" target="_blank">Studies of people who had prolonged exposure</a> to others with COVID-19 have demonstrated how masks can reduce the chance of the virus spreading. In general, <a href="https://www.cdc.gov/coronavirus/2019-ncov/more/masking-science-sars-cov2.html" target="_blank" rel="noopener noreferrer">well-fitted cloth masks</a> made up of multiple layers can stop most large droplets and at least half of the tiny ones. Plastic <a href="https://doi.org/10.1101/2020.10.05.20207241" target="_blank" rel="noopener noreferrer">face shields</a> alone are far less effective. <a href="https://www.washingtonpost.com/health/2020/08/13/cdc-mask-guidance-masks-valves/" target="_blank" rel="noopener noreferrer">Face masks with valves or vents</a> might be good for construction work, but they don't stop the wearer from breathing out virus into the air.</p>
Can I reuse a mask and when should I replace it?<p>Reusable masks should be kept clean and dry. We're moving into cold and flu season, and noses get drippy. A rule of thumb: Anytime a mask is wet to the point that you can discern the wetness, it's time for a new one if it's disposable, or it's time to clean your reusable mask.</p><p>Wetness allows viruses to more easily move through paper or fabric because it allows the threads to move and may reduce the electrostatic charge in the masks that add extra protection with some fabrics.</p><p>In general, you can use a mask that stays clean and dry for about a week before you need to wash or discard it.</p>
How should I clean a cloth mask?<p>Washing your mask is like washing your clothes. You know when it is time.</p><p>In general, <a href="https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/how-to-wash-cloth-face-coverings.html" target="_blank">cleaning your mask weekly</a> should be sufficient. If odors develop before then, it's a good idea to wash it sooner. Odor generally means bacterial buildup.</p><p>Cleaning your mask by hand with soap and water is your best option. Using a general detergent on a gentle cycle in the washing machine is also fine, but that may increase the risk of damage, depending on the quality of the material. COVID-19 is not a hardy virus. Any soap or detergent should work fine. There's no need for special chemicals, bleach or harsh soaps.</p><p>Be careful to remove any inserts before washing. Inserted filters are generally not washable.</p><p>Air drying masks works best. Remember, masks should be completely dry before use. So be sure to have a replacement mask handy while the one you just washed dries.</p><p>Sunlight is always a great source of heat to dry your mask. Also, sunlight has ultraviolet radiation, which has been shown to <a href="http://doi.org/10.1111/php.13293" target="_blank" rel="noopener noreferrer">eliminate coronavirus</a> and is also known to have antibacterial properties.</p>
Can I wear the mask below my nose?<p>Wearing your mask below your nose is, frankly, ridiculous.</p><p>Think about it. If you are breathing through your nose and only covering your mouth, you are effectively eliminating the point of the mask. Properly wearing a mask requires covering both your nose and mouth at all times.</p><p>Studies show that wearing a proper cloth mask or surgical mask while exercising <a href="http://doi.org/10.1513/AnnalsATS.202008-990CME" target="_blank">doesn't affect the flow of oxygen</a> or carbon dioxide in any detectable way. So, unless you have serious heart and lung problems, that isn't an excuse.</p>
How do I safely remove my mask if I’m going to eat or drink?<p>When you <a href="https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/how-to-wash-cloth-face-coverings.html" target="_blank">take your mask off</a>, remove it carefully by the straps without touching anything else and put it somewhere safe, like wrapped in paper in a purse, bag or pocket. Then wash your hands or use hand sanitizer. When you put it back on, wash your hands again.</p>
So, how can I have a safe holiday gathering?<p>The safest way to celebrate this year is to do so with members only within your household. The <a href="https://www.cdc.gov/coronavirus/2019-ncov/daily-life-coping/holidays.html" target="_blank" rel="noopener noreferrer">CDC is now stressing that point</a>, as well. If you do celebrate with friends and relatives from outside your household, you need an action plan to reduce the risk of exposure.</p><p>Here are five recommendations:</p><ul><li>Limit the number of people – fewer people means fewer opportunities for exposure, and you'll have more room to spread out.</li><li>Require masks when not eating or drinking.</li><li>Use physical distancing when eating. Try to seat people <a href="https://doi.org/10.1136/bmj.m3223" target="_blank" rel="noopener noreferrer">at least 6 feet apart</a>. Eat outside if you can.</li><li>Consider being tested for COVID-19 before traveling or gathering. It's not a guarantee, but it can help flag illnesses. Remember to self-isolate between the test and the event.</li><li>Be prepared to self-isolate for 14 days after traveling or participating in any event that involves people from outside your home.</li></ul><p>[<em>Research into coronavirus and other news from science</em> <a href="https://theconversation.com/us/newsletters/science-editors-picks-71/?utm_source=TCUS&utm_medium=inline-link&utm_campaign=newsletter-text&utm_content=science-corona-research" target="_blank" rel="noopener noreferrer">Subscribe to The Conversation's new science newsletter</a>.]</p><p><em>The map has been updated with New Hampshire announcing a mask mandate effective Nov. 20.</em></p><p><em>Jason Farley is a professor, infectious disease-trained epidemiologist and nurse practitioner at the Johns Hopkins University School of Nursing.<br></em></p><p><em>Disclosure statement: Jason Farley, PhD, MPH, ANP-BC, FAAN receives funding from the National Institutes of Health on the Rapid Acceleration of Diagnostics for COVID-19 and Becton Dickinson for studies on SARS-CoV-2 diagnostics.</em></p><p><em>Reposted with permission from <a href="https://theconversation.com/why-face-masks-belong-at-your-thanksgiving-gathering-7-things-you-need-to-know-about-wearing-them-150130" target="_blank">The Conversation</a>. </em></p>
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By Amol Mehra
Set against rising calls for action to combat growing inequality and the climate crisis, the COVID-19 pandemic underscores the importance of the key drivers of industry and economic reform: workers, communities and the environment.
The Built Environment<p>The built environment – the physical places and structures that we inhabit – is a huge potential change agent in this regard. Buildings and construction account for massive amounts of energy usage and about 40% of global CO2 emissions, providing a clear pathway to shift current consumption and production pathways.</p><p>The construction sector accounts for around <a href="https://www.mckinsey.com/~/media/McKinsey/Industries/Capital%20Projects%20and%20Infrastructure/Our%20Insights/Reinventing%20construction%20through%20a%20productivity%20revolution/MGI-Reinventing-Construction-In-Brief.pdf" target="_blank">13% of the world's GDP </a>and<a href="https://iloblog.org/2020/05/11/the-construction-sector-can-help-lead-the-economic-recovery-heres-how/" target="_blank" rel="noopener noreferrer"> for 7.2% of the global workforce</a>. Many of the jobs linked to these sector have a negative history of labour rights, especially with respect to <a href="https://laborrights.org/issues/migrant-labor" target="_blank" rel="noopener noreferrer">migrant laborers</a>. As <a href="https://iloblog.org/2020/05/11/the-construction-sector-can-help-lead-the-economic-recovery-heres-how/" target="_blank" rel="noopener noreferrer">experts have noted</a>, the scale of the industry and its relative impacts on labour markets and the environment make it a prime agent of transformation of the broader global economy.</p><p>By prioritizing approaches that focus on decarbonization and the promotion of labor rights protections, we can create economic opportunities that promote healthy, regenerative structures. Efforts are starting to seed in this regard, with <a href="https://www.vox.com/energy-and-environment/2020/1/15/21058051/climate-change-building-materials-mass-timber-cross-laminated-clt" target="_blank" rel="noopener noreferrer">increased attention</a> being placed to mass timber and other wood products in construction, as well as the use of natural materials in buildings.</p><p>At the same time, leading human rights organizations are looking more closely at promoting <a href="https://www.ihrb.org/focus-areas/built-environment/commentary-linking-climate-human-rights-built-environment-lifecycle" target="_blank" rel="noopener noreferrer">rights-based approaches</a>.</p>
Not all industries are equal. ourworldindata.org