635967 external_news 1591295790 1591295790 Climate researchers increasingly believe 2019 may represent the world's peak output of carbon dioxide, with a combination of the coronavirus pandemic and a rapid expansion of renewable energy putting a cap on emissions years earlier than expected. The milestone would signal a significant shift for the planet, ending decades of runaway emissions growth and signaling the beginning of a new chapter where CO2 levels start to fall. "It really shows us how close we are to turning this corner," said Kim Cobb.

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