“When the Chinese economy does recover, they are likely to see an increase in emissions in the short term to sort of make up for lost time, in terms of production,” says Zeke Hausfather, a climate scientist and the director of climate and energy at the Breakthrough Institute, which advocates for climate action. Researchers quantify these emissions by looking at factors like how much coal China reports using in its power plants, and by snooping with satellites on nitrous oxide emissions, a proxy for industrial activity. (Looking at carbon dioxide isn’t particularly useful because that gas mixes more quickly with the atmosphere, muddying the signal.)
These mayors are members of C40, a network of 94 large cities—Paris, Los Angeles, Shanghai, Lagos, to name a few—committed to meeting the goals of the Paris Agreement of limiting global warming to 1.5 degrees Celsius over preindustrial levels and reducing global greenhouse gas emissions by 50 percent by 2030.That declaration didn’t just reaffirm these cities’ efforts to fight climate change .
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Plus: How can I avoid catching it? Is Covid-19 more deadly than the flu? Our in-house Know-It-Alls answer your questions.For precedent for this kind of economic bounce-back, look no further than the 2008 financial crash in the US. It caused a 3 percent reduction in global greenhouse gas emissions, but those emissions went right back to normal over the next few years as the economy recovered. Indeed, much to the chagrin of climate scientists, global emissions continue to grow year over year. “Broadly speaking, the only real times we've seen large emission reductions globally in the past few decades is during major recessions,” says Hausfather. “But even then, the effects are often smaller than you think. It generally doesn't lead to any sort of systematic change.”
That’s due in large part to the cheapness and abundance of fossil fuels. To go green, it helps to have a government in place that uses subsidies to encourage the adoption of renewables, rather than continuing with business as usual. “This is not not not the way we want to lower emissions, is having a global pandemic, or teetering on the edge of the next Great Depression,” says Jonathan Foley, executive director of Project Drawdown, an climate change advocacy group. “But history has shown us that sometimes after an economic shock, a reorganization of the economy follows.”
After the 2008 crash, for example, President Obama signed the American Recovery and Reinvestment Act, which pumped $30 billion into green energy research and projects. That’s a less likely scenario under President Trump, who once claimed in a tweet that China created climate change to make US manufacturing “non-competitive.” In an ideal world, advocates like Hausfather argue, we as a society would pump mountains of money into projects like high-speed rail and retrofitting the energy grid to store renewables like solar power. That’s good for all of civilization, and particularly for the workers who make it possible—a stimulus that both juices the economy and protects the environment. One of the core components of the Green New Deal, a resolution proposed in both houses of Congress in 2019, is guaranteed high-paying jobs in green energy sectors. (The resolution was shot down in the Senate, but the House tasked a committee with considering the climate crisis.)