To understand how global warming could influence future climate, scientists look to the Paleogene Period that began 66 million years ago, covering a time when Earth’s atmospheric carbon dioxide levels ...

A peer-reviewed study published in Nature Geoscience has found that during Earth’s most extreme ancient warming periods, between 66 and 47.8 million years ago, rainfall across mid-latitude regions ...

The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants that they relied on for food. Fossil leaf assemblages from ...