NASA astronaut Don Pettit has captured another remarkable shot, this one showing the Betsiboka River estuary in Madagascar.

It also offers a venue to do so in a region with a reputation for being among the most geologically flamboyant on our planet. Guizhou is synonymous with the karst spires that stab the skies like ...

Scientists think a small rock discovered near Earth last August was hurled into space by an ancient impact on the lunar surface.

Over 25 years ago, researchers discovered that some of these deep Earth reverberations pointed to the existence of two underground “super-continents” hundreds of miles beneath Africa and the Pacific ...

Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Jonathan Nash was a mysterious, unreasonably talented and incredibly funny man, who influenced generations of writers ...

Credit: Roberto Machado Noa/Moment via The past few centuries have yielded an abundance of information about ...