Resumen de Super-greenhouse
Brahic talks about the Paleocene-Eocene thermal maximum of 55 million years ago. For the past few million years, Earth has gradually been getting hotter and hotter and is now on the verge of a planetary heatwave the likes of which have rarely been seen. Even before the mercury peaks, it's pretty toasty: The poles are essentially ice-free, the deepest reaches of the oceans are 8 °C warmer than today, sea levels are roughly 70 meters higher and there are crocodile-like champsosaurs in the Arctic Ocean.
