Bears do it. So do groundhogs, squirrels, turtles and many other animals. Humans, however, can’t hibernate — at least not right now. But scientists exploring the genetic underpinnings of hibernation ...

Putting people into sleep mode is a sci-fi concept that's a lot closer to becoming real than you might think. Erin Belback is part of an ongoing human trial backed by NASA that aims to replicate the ...