Can the Fern That Cooled the Planet Do It Again? – Scientific American

The fact that the fern only needs a little over an inch of water under it to grow makes the whole scenario seem just within reason—that is, until you learn how much carbon this carbon dioxide-hungry plant sucked up over the course of those million years.

“What’s really incomprehensible,” Bujak said, “is that the previous process of our planet cooling and CO2 dropping took 50 million years to unfold. Now, we may be reversing this process in a matter of centuries.”

Can the Fern That Cooled the Planet Do It Again? – Scientific American