Investigation to combat muscular atrophy with implantable device

Extended spaceflight takes a toll on many systems within the human body, including the musculoskeletal system. An investigation aboard the International Space Station will examine a drug compound and drug delivery system ...

How do kangaroos breathe while they hop?

If you hop like a kangaroo, you might be able feel the air being pushed out of your lungs. Here's why it happens and why it matters.