Peering into the jungle of microbes that live within us, researchers have stumbled across what seem to be an entire new class of virus-like objects. "It's insane," says University of North Carolina ...

Did you know you have a second brain? Your digestive system is lined with brain cells. This “Second Brain” directs more than digestion. Scientists think it helps control your mood and maybe some of ...

In the 1966 sci-fi film Fantastic Voyage, a group of scientists ventures inside the body of an injured colleague to save him from a life-threatening blood clot. They get a front-row seat to the ...