A stunning new fossil find from the Grand Canyon fills in some blanks from a time when evolution began experimenting with weird new forms. Frustratingly, fossils from later in the Cambrian period are ...

Around 410 million years ago terrestrial life was relatively simple. There were no forests or prairies—land was largely dominated by slimy microbial mats. The types of plants that would eventually ...

Physicists are fond of Gedankenexperimente—thought experiments that are difficult or impossible to perform in the real world. Schrödinger’s cat is a well-known example of a thought experiment, used to ...

How paleontologists interpret the fossil record is about to change, as new research challenges our understanding of bone ...