At first glance, fossilized leaves and wood might seem like fragments of a now-extinct world. But deep beneath the Earth lies a botanical archive—one that is spilling the truth about Earth’s history.

At the La Brea Tar Pits and Museum, Jessie George and other paleobotanists — the folks who study ancient plants the way paleontologists study prehistoric bones — are compiling a list of California ...

If you’ve seen any of the “Ice Age” animated Disney movies, we have some bad news: You don’t know the real ice age. It was an ...