Phobos could be lots of empty space.

The Gulf oil spill is massive, will take years to clean up

Gemstones made in the lab could improve your cell phone or catch nasty bacteria in your water.

A cichlid brain works differently when the fish attacks its mirror image.

Study finds that dihydrocapsiate may give a diet extra power.

Global high school science competition concludes with top prizes going to projects on cancer-fighting quantum dots, quantum computer algorithms and computer programming. (p. 15)

One of the world's simplest organisms is also one of the hardest to classify.

A new study connects dreams with learning a new skill.

Pinning down how much of the toxin is in the fish we buy.

Obama outlines space program that would take crew beyond the moon.

Scientists are perfecting a new generation of airport scanning machines.