The rocket, built by commercial firm Orbital Sciences, carries an unmanned Cygnus capsule. It will lift off from a pad at Wallops Island, Va.
It's long been known that chimps learn from each other to make useful tools. Now researchers have seen them copy each other's "fashion statement," Dr. Katherine Cronin tells NPR's Arun Rath.
What if I told you that an ordinary-looking wave hitting your beach had traveled, intact, halfway across the planet? Would you believe me? Well, believe this.
This spring, the river's final stretch flowed freely for the first time in 50 years. NPR's Kelly McEvers talks to writer Rowan Jacobsen about his paddling trip down the temporarily-restored delta.
This summer, the moon will reach "super" status — turning full at its closest point to the Earth — no fewer than three times. The first supermoon appears Saturday.
The largest school of the tiny fish seen in 30 years was spotted earlier this week off La Jolla, Calif.
The 50-year-old Asian elephant, named Phlai Khlao, was apparently poisoned before his tusks were hacked off. Thai authorities are questioning a suspect who is a former elephant handler.