Visual media has played out all sorts of different post apocalyptic scenarios, from the fantasy zombie kind to the down and dirty nuclear annihilation doomsday, and somehow humans always manage to survive.But where human...

Five years ago, Robert Krulwich of NPR told us about the billions of bugs that lived high above us in the atmosphere. Now there’s an even newer, stranger ecosystem found much higher: bacteria, fungi, and viruses th...

At one time, scientists were surprised to discover microbes living in places that were thought to be uninhabitable. That doesn't happen anymore, because scientists know life can thrive almost anywhere on earth. After 3...