The extinct toad from the ice age was found among the amphibian collection at La Brea Tar Pits and Museum.

The speed of light remains one of physics’ firmest assumptions, but scientists still test whether it ever shifts under extreme conditions. A new review draws together decades of observations, ...

In the heart of the Middle Atlas Mountains in central Morocco, a global team of paleontologists and geologists has discovered new remains of a very unusual dinosaur. It belonged to the group called ...

Researchers from Queen Mary University of London have uncovered a previously unknown mechanism by which HIV-1 can infect resting immune cells. The discovery challenges a decades-old assumption in HIV ...