Got a nasty stomach bug that won’t go away? It could be cyclosporiasis, a parasitic infection that causes weeks of ...

Christopher Nolan explains 'The Odyssey': The director discusses how he made the epic new film starring Matt Damon that was ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Earth’s history has been shaped by five mass extinctions—catastrophic periods when life changed so dramatically that entire ...

These colossal clams were rumoured to kill humans but the opposite is true – climate change, pollution and overharvesting are ...