Beneath the towering Guadalupe Mountains of Texas lies a dramatic story of transformation. Once part of an ancient sea, the fossilized Capitan Reef now forms craggy peaks and iconic cliffs like El ...

Two hundred and fifty one million years ago, the worst mass extinction event Planet Earth has ever seen ruined the life of ...

Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period.