Every Type of Satellite Data Gathered from Earth, In One Amazing Video

Imagine that you're orbiting the Earth aboard the International Space Station. What if you could access a heads-up display, offering multiple views of the planet below, as seen through the eyes of NASA's fleet of Earth observation satellites? This stunning simulation reveals what it could look like. » 9/30/14 11:30am Yesterday 11:30am

Why Do Your Pupils Get Larger When You're On Drugs?

Normally, our pupils dilate in response to changing light; as it gets darker, our pupils get larger. But they expand in size for other reasons as well, including when we're sexually aroused and when we're performing complex cognitive tasks. But it's also known that certain medications — including illicit drugs — can… » 9/29/14 11:20am Monday 11:20am