What the World Needs from the Paris Climate Talks
The UN climate conference, to be held in Paris in December, represents the culmination of decades of complex climate negotiations that began in 1992. The COP21, as the conference is known, may well be the endgame—our last, best chance to achieve a global, legally binding climate agreement.
We desperately need an agreement in order to curb fossil fuel emissions, put a price on carbon and drive investments in climate-smart practices and technologies. But a Paris treaty must take a much bolder approach than simply reducing fossil fuel emissions. In most of the world—nearly 60 developing countries—deforestation and agriculture generate far more greenhouse gas emissions than the burning of fossil fuels.
How land is used—agriculture, forestry and other land-altering activities like suburban sprawl and mining—is therefore a key piece of the climate puzzle. Land use accounts for nearly a quarter of global greenhouse gas emissions, including approximately 10 percent from clearing forests for crops and grazing and another 10 to 12 percent from conventional methods of tilling the soil, raising livestock, applying chemical fertilizers and burning fields. These emissions could be greatly reduced through more sustainable practices.
Our decisions regarding land use have lasting and profound consequences. Reckless development can lead to major carbon emissions, while smart conservation strategies create important opportunities to fight global warming. Healthy forests and ecosystems actually pull carbon out of the atmosphere and store it in trees, plants and soil. Forests have the potential to capture and store 10 to 14 percent of gross carbon emissions from the atmosphere, while the land sector as a whole could sequester more than 25 percent.
At this juncture, the world needs developing countries with intact tropical forests to make a huge, positive contribution to fighting climate change by conserving their workhorse ecosystems. This despite the fact that developed countries like the U.S. are among the world’s biggest polluters, past and present; for example, the average per capita carbon emissions in Latin America are about one-seventh of U.S. per capita emissions.
Yet while tropical forests in the global South store the most carbon and harbor the most biodiversity in the world, they’re also under the greatest pressure to be cleared for timber and agriculture to meet the rising demands of our growing global population. And these regions tend to suffer the most from the impacts of global warming, such as climate-related diseases and extreme weather.
Previous COP meetings have foundered over the injustice of this asymmetry between developing countries and developed countries. Yet although this issue is still important, it is no longer as divisive as it once was. There’s now broad consensus that we must fight climate change with everything we’ve got and forward-thinking land use is one of our most powerful tools. The major role forests play in climate protection is now so widely acknowledged that hundreds of major companies have promised to eliminate deforestation from their supply chains (meaning that they’ve pledged to stop sourcing materials from suppliers who cut forests down). Many have signed onto pledges like the New York Declaration on Forests or the Consumer Goods Forum. Of course, there’s much more to protecting forests than simply making a “deforestation-free” declaration, but it is encouraging to see these companies taking action.
COP21 must build on this momentum by defining exactly how to cut emissions and sequester carbon on farmland and forestland. The challenge is for world leaders to find a way forward that balances food security and social and economic impacts—including the livelihoods and rights of people in developing countries—with the demands of a population that is expected to grow to 9.6 billion by 2050.
To fight climate change effectively through land use, we will have to apply a full range of sustainability strategies beyond “zero-deforestation,” including climate-smart agriculture, increased yields and livelihoods for farmers on existing cropland (so they don’t resort to clearing more forest) and economic incentives to keep forests standing. We must also protect water and non-forest ecosystems. Finally, we have to restore lands degraded by irresponsible farming and livestock production. Concerted efforts in these areas could sequester more carbon—but more importantly, they are essential to protecting whole landscapes of viable, interdependent ecosystems.
Better land use is mission-critical for building a sustainable and just global economy—and imperative for protecting the world’s rapidly disappearing forests, habitats and species and as well as to reducing emissions. One of the more hopeful aspects of COP21 is that the delegates heading to Paris recognize this. This time around, land use issues are likely to be consensus-builders instead of deal-breakers.
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After sustained declines in the number of COVID-19 cases over recent months, restrictions are starting to ease across the United States. Numbers of new cases are falling or stable at low numbers in some states, but they are surging in many others. Overall, the U.S. is experiencing a sharp increase in the number of new cases a day, and by late June, had surpassed the peak rate of spread in early April.
Seven day rolling average of number of people confirmed to have COVID-19, per day (not including today). This chart gets updated once per day with data by Johns Hopkins. Johns Hopkins university doesn't provide reliable data for March 12 and March 13. Johns Hopkins CSSE Get the data
To Have a Second Wave, the First Wave Needs to End.<p>A wave of an infection describes a large rise and fall in the number of cases. There isn't a precise epidemiological definition of when a wave begins or ends.</p><p>But with talk of a <a href="https://www.theguardian.com/world/2020/jun/27/new-covid-19-clusters-across-world-spark-fear-of-second-wave" target="_blank">second wave in the news</a>, as an <a href="https://www.american.edu/cas/faculty/mhawkins.cfm" target="_blank">epidemiologist and public health researcher</a>, I think there are two necessary factors that must be met before we can colloquially declare a second wave.</p><p>First, the virus would have to be controlled and transmission brought down to a very low level. That would be the end of the first wave. Then, the virus would need to reappear and result in a large increase in cases and hospitalizations.</p><p>Many countries in <a href="https://doi.org/10.1038/s41562-020-0908-8" target="_blank">Europe and Asia have successfully ended the first wave</a>. <a href="https://www.theguardian.com/world/2020/jun/08/new-zealand-abandons-covid-19-restrictions-after-nation-declared-no-cases" target="_blank">New Zealand</a> and <a href="https://www.newyorker.com/magazine/2020/06/08/how-iceland-beat-the-coronavirus" target="_blank">Iceland</a> have also made it through their first waves and are now essentially coronavirus-free, with very low levels of community transmission and only a handful of active cases currently.</p>
Different States, Different Trends<p>Looking at U.S. numbers as a whole hides what is really going on. Different states are in <a href="https://www.nytimes.com/interactive/2020/us/coronavirus-us-cases.html" target="_blank">vastly different situations right now</a> and when you look at states individually, four major categories emerge.</p><ol><li>Places where the first wave is ending: States in the Northeast and a few scattered elsewhere experienced large initial spikes but were able to mostly contain the virus and substantially brought down new infections. <a href="https://www.nytimes.com/interactive/2020/us/new-york-coronavirus-cases.html" target="_blank">New York</a> is a good example of this.</li><li>Places still in the first wave: Several states in the South and West – see <a href="https://www.nytimes.com/interactive/2020/us/texas-coronavirus-cases.html" target="_blank">Texas</a> and <a href="https://www.nytimes.com/interactive/2020/us/california-coronavirus-cases.html" target="_blank">California</a> – had some cases early on, but are now seeing massive surges with no sign of slowing down.</li><li>Places in between: Many states were hit early in the first wave, managed to slow it down, but are either at a plateau – like <a href="https://www.nytimes.com/interactive/2020/us/north-dakota-coronavirus-cases.html" target="_blank">North Dakota</a> – or are now seeing steep increases – like <a href="https://www.nytimes.com/interactive/2020/us/oklahoma-coronavirus-cases.html" target="_blank">Oklahoma</a>.</li><li>Places experiencing local second waves: Looking only at a state level, <a href="https://www.nytimes.com/interactive/2020/us/hawaii-coronavirus-cases.html" target="_blank">Hawaii</a>, <a href="https://www.nytimes.com/interactive/2020/us/montana-coronavirus-cases.html" target="_blank">Montana</a> and <a href="https://www.nytimes.com/interactive/2020/us/alaska-coronavirus-cases.html" target="_blank">Alaska</a> could be said to be experiencing second waves. Each state experienced relatively small initial outbreaks and was able to reduce spread to single digits of daily new confirmed cases, but are now all seeing spikes again.</li></ol><p>The trends aren't surprising based on how states have been dealing with reopening. The virus will go wherever there are susceptible people and until the U.S. stops community spread across the entire country, the first wave isn't over.</p>
What Could a Second Wave Look Like?<p>It is possible – though at this point it seems unlikely – that the U.S. could control the virus before a vaccine is developed. If that happens, it would be time to start thinking about a second wave. The question of what it might look like depends in large part on everyone's actions.</p><p>The <a href="https://dx.doi.org/10.1086%2F592454" target="_blank">1918 flu pandemic</a> was characterized by a mild first wave in the winter of 1917-1918 that went away in summer. After restrictions were lifted, people very quickly went back to pre-pandemic life. But a second, deadlier strain came back in fall of 1918 and third in spring of 1919. In total, <a href="https://www.cdc.gov/flu/pandemic-resources/1918-commemoration/1918-pandemic-history.htm" target="_blank">more than 500 million people were infected</a> worldwide and upwards of <a href="https://theconversation.com/compare-the-flu-pandemic-of-1918-and-covid-19-with-caution-the-past-is-not-a-prediction-138895" target="_blank">50 million died</a> over the course of three waves.</p><p>It was the combination of a quick return to normal life and a mutation in the flu's genome that made it more deadly that led to the horrific second and third waves.</p><p>Thankfully, the coronavirus appears to be much more <a href="https://doi.org/10.1016/j.meegid.2020.104351" target="_blank">genetically stable</a> than the influenza virus, and thus less likely to mutate into a more deadly variant. That leaves human behavior as the main risk factor.</p><p>Until a <a href="https://theconversation.com/what-needs-to-go-right-to-get-a-coronavirus-vaccine-in-12-18-months-136816" target="_blank">vaccine or effective treatment is developed</a>, the tried-and-true public health measures of the last months – <a href="https://theconversation.com/this-simple-model-shows-the-importance-of-wearing-masks-and-social-distancing-140423" target="_blank">social distancing,</a> <a href="https://theconversation.com/masks-help-stop-the-spread-of-coronavirus-the-science-is-simple-and-im-one-of-100-experts-urging-governors-to-require-public-mask-wearing-138507" target="_blank">universal mask wearing</a>, frequent hand-washing and avoiding crowded indoor spaces – are the ways to stop the first wave and thwart a second one. And when there are surges like what is happening now in the U.S., further reopening plans need to be put on hold.</p>
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Methane on the Rise<p>Not only is this a tragic waste of food at a time when many are going hungry, it is also an <a href="https://donatedontdump.net/2014/07/07/the-effects-of-food-waste-on-the-environment-by-junemy-pantig/" target="_blank">environmental hazard</a> and could contribute to global warming. Landfill gas – <a href="https://www.epa.gov/lmop/basic-information-about-landfill-gas" target="_blank">roughly half methane and half carbon dioxide (CO2)</a> – is a natural byproduct of the decomposition of organic material.</p>
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Food Prices Collapsing<p>The excess has also seen prices collapse. The <a href="http://www.fao.org/worldfoodsituation/foodpricesindex/en/" target="_blank">FAO Food Price Index</a> (FFPI) averaged 162.5 points in May 2020, down 3.1 points from April and reaching the lowest monthly average since December 2018. The gauge has dropped for four consecutive months, and the latest decline reflects falling values of all the food commodities – dairy, meat, cereal, vegetable – except sugar, which rose for the first time in three months.</p><p>All this while the pandemic is exacerbating other global food trends.</p><p>"This year, some 49 million extra people may fall into extreme poverty due to the COVID-19 crisis," said António Guterres, Secretary-General of the UN. "The number of people who are acutely food or nutrition insecure will rapidly expand. <a href="https://www.youtube.com/watch?v=fGhLKAbNDiY&feature=youtu.be" target="_blank">Even in countries with abundant food, we see risks of disruptions in the food supply chain</a>."</p>
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