The current 346 square miles of Petrified Forest open a window on an environment more than 200 million years old, one radically different from today's grassland. Where you now see ravens soaring ...

A melting ice patch in the Rocky Mountains uncovered an ancient forest, and these trees have stories to tell about dynamic landscapes and climate change.

A team of scientists from Montana State University, the U.S. Geological Survey and collaborating institutions discovered the ancient whitebark pine forest while on an archeological survey on the ...

But it hasn't always been that way; an ancient forest lies beneath layers of ice. If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a ...