About 252 million years ago, 80 to 90 percent of life on Earth was wiped out. In the Turpan-Hami Basin, life persisted and ...

A graph I saw in high school appeared to show the Earth breathing. It was a graph that plotted carbon dioxide in the ...

but they may have actually belonged to families that no longer exist. Researchers say the results of this recent research illustrate the importance of not trying to “shoehorn” ancient plants ...

Keeping these plants with us will be no small feat: Some 89 percent of them are still at risk of extinction.