European Contact with the Americas May Have Triggered Global Cooling

in americas •  6 years ago 

Hi Steemians wishing you all the very best. I like to share this video with all my friends at Steemit.
Koch and his colleagues attribute the dip in atmospheric carbon dioxide—a greenhouse gas associated with warming—to the loss of more than 50 million people in the Americas.
https://eos.org/articles/european-contact-with-the-americas-may-have-triggered-global-cooling

americas european triggered global cooling
6 years ago by

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