Global CO2 emissions from fossil fuels are set to drop by up to seven percent in 2020 because of the coronavirus pandemic, but even this dramatic decline — the sharpest since WWII — would barely dent longterm global warming, researchers have said.

In early April, coronavirus lockdowns led to a 17 percent reduction worldwide in carbon pollution compared to the same period last year, according to the first peer-reviewed assessment of the pandemic's impact on CO2 emissions, published in Nature Climate Change.

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