The Chicxulub asteroid impact might have set off 100,000 years of global warming

The hit caused the release of carbon dioxide, driving temperatures to rise, researchers say

Chixculub impact illustration

START FROM SCRATCH  The asteroid that hit Earth about 66 million years ago, wiping out most of the planet’s life, also spewed carbon dioxide into the air and heated up the climate for millennia, a new study suggests.

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