Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

A genomic atlas of Nematostella vectensis reveals how primitive animals created multiple cell types millions of years ago, ...

A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...

Exceptionally preserved fossils from the Ediacaran period challenge what scientists thought was possible in sandstone. In the fossil record, creatures without hard shells or skeletons, such as ...