Scientists look to the PETM for clues about the current warming of Earth, although Clyde cautions that "Earth 50 million years ago was very different than it is today, so it's not a perfect analog." While scientists still don't fully understand the causes of these hyperthermal events, "they seem to be triggered by warming," Clyde says. It's possible, he says, that less dramatic warming events destabilized these large amounts of carbon, releasing them into the atmosphere where they, in turn, warmed the Earth even more. |
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In my run for U.S. Senate against Utah's Orrin Hatch, I posted many progressive ideas and principles that I internalized over the years. I'm leaving that site up indefinitely, since it describes what I believe most members of our species truly (more...)