Science News

On Dec. 9, 1965, people in Kecksburg, Pa., saw a ball of fire in the sky and an object land in the woods. After fighting to open government documents on the case, a journalist says she thinks the object was either a secret device or a UFO.

In California, a growing number of children with attention deficit hyperactivity disorder, or ADHD, are being treated with marijuana. This fact has sparked a heated debate. But as some doctors point out, the two most commonly prescribed medications for ADHD, Ritalin and Aderall, are essentially amphetamines. One expert even speculated that pot may prove to be a "wonder drug" for such patients.

A new study suggests that an ancient ocean may have once existed on Mars. Scientists reveal an extensive network of valleys around the equator, which would have funneled rainfall into an ocean in the northern hemisphere. This new map also suggests that the red planet once boasted a more temperate, humid climate.

Hundreds of icebergs that split off ice shelves in Antarctica are drifting toward New Zealand. Officials say the massive chunks of ice could pose a hazard to ships in the area. The nearest iceberg was spotted about 160 miles southeast of New Zealand's Stewart Island.

NASA and the space industry are looking at a human mission to an asteroid as a way to prepare for long stays on the moon and Mars. Teams are studying sending an Orion spacecraft -- NASA's replacement for the space shuttle -- to a space rock. But will the White House buy into the plan?