A radioactive tracer that "lights up" cancer hiding inside dense breasts showed promise in its first big test against mammograms, revealing more tumors and giving fewer false alarms
NASA moved shuttle Atlantis to the launch pad on Thursday for a flight next month to the Hubble Space Telescope after being waylaid by a pair of tropical storms
Scientists have mapped the cascade of genetic changes that turn normal cells in the brain and pancreas into two of the most lethal cancers
Hurricane experts say all the weather ingredients, which normally fluctuate, are set on boil for the formation of storms. And it's going to stay that way for a while
The number of teen suicides has fallen slightly but the rate remains disturbingly high, researchers said
A survey being released by the Mercer consulting firm found 59% of companies intend to keep down rising health care costs in 2009 by raising workers' deductibles, copays or out-of-pocket spending limits
That rumbling can put your health, sanity and marriage at risk. Here's what you can do
125 years ago this week, Krakatoa exploded over Indonesia, unleashing the deadliest eruption in modern memory
Photographer Hakan Ludwigson takes an environmental tour of the great frozen island
A high-resolution camera aboard NASA's Mars Reconnaissance Orbiter captures the abstract beauty of the Martian landscape
Almost half the world's primate species face extinction according to a new report by the International Union for Conservation of Nature's Primate Specialist Group. Here's a look at some of the most threatened
The war we are fighting is our war. This battle is for Pakistan's soul.