Title : The University of Wisconsin announces a new study indicating that "humans are reversing a long-term cooling trend tracing back at least 50 million years."
link : The University of Wisconsin announces a new study indicating that "humans are reversing a long-term cooling trend tracing back at least 50 million years."
The University of Wisconsin announces a new study indicating that "humans are reversing a long-term cooling trend tracing back at least 50 million years."
Announcement here.“If we think about the future in terms of the past, where we are going is uncharted territory for human society,” says the study’s lead author, Kevin Burke, a graduate student in the lab of paleoecologist John “Jack” Williams, professor of geography at the University of Wisconsin–Madison. “We are moving toward very dramatic changes over an extremely rapid time frame, reversing a planetary cooling trend in a matter of centuries.”
All of the species on Earth today had an ancestor that survived the Eocene and the Pliocene, but whether humans and the flora and fauna we are familiar with can adapt to these rapid changes remains to be seen. The accelerated rate of change appears to be faster than anything life on the planet has experienced before....
During the Eocene, Earth’s continents were packed more closely together and global temperatures averaged 13 degrees Celsius warmer than they are today. Dinosaurs had recently gone extinct and the first mammals, like ancestral whales and horses, were spreading across the globe. The Arctic was occupied by swampy forests like those found today in the southern U.S....
“We’ve seen big things happen in Earth’s history — new species evolved, life persists and species survive. But many species will be lost, and we live on this planet,” says Williams. “These are things to be concerned about, so this work points us to how we can use our history and Earth’s history to understand changes today and how we can best adapt.”
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