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 ...

Paleontologists have discovered remarkable fossils in the Grand Canyon that reveal fresh details about the emergence of complex life half a billion years ago. The newfound remains of fauna from the ...

In the quiet layers of rock, footprints, bones, and leaves tell a story of worlds lost, and of our own uncertain future. The ...