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NASA's administrator is defending the president's proposed budget for NASA, which cancels the space agency's planned space shuttle successor and instead relies on private companies to taxi crews into orbit. Charles Bolden said executives from seven companies working on commercial crew vehicles are "the faces of a new frontier."

A federal judge rules against the teaching of intelligent design in Dover, Pa., schools. He says the concept is a "religious view" that has no place in science classrooms. The case could have important implications for the teaching of evolution in schools across the country.

What can the military do to improve its abilities to identify combat stress, and treat troops returning home from a war zone? We speak to the director of the Naval Center for Combat and Operational Stress Control in San Diego about the challenges servicemembers face when they return home from deployment.

If many types of paper-based books are headed for extinction, what will take their place? "E-readers" are a big part of the present and future — but not the whole story. Video games and multi-narrator online stories will have their places too.

Successful aging is not a passive sport. For example, genes are only about 50 percent responsible for our memory. It's believed the other half is determined by environment and behavior. Researchers

A lot of the information pharmacies provide patients about their prescriptions is too long and chock-full of medical jargon and legalese, according to a new study. The Food and Drug Administration wants to make patient information more user-friendly.

Joppatowne High School in Maryland has built a curriculum to train students for careers in homeland security. Proponents say the goal is to get the students jobs, but critics fear that the program is telling kids what to think about national security rather than teaching them to protect it.

The bdelloid rotifer, a tiny invertebrate, hasn't had sex for 30 million years — and you thought you had a long dry spell. But species that reproduce asexually don't usually last very long, so the big question is how the rotifer has gone without it for millennia. Scientists at the University of Iowa think they have an answer.

Public health officials are confident that the new H1N1 vaccine is safe. Still, as with any vaccine, they have systems in place to monitor vaccine recipients in order to spot any potential problems.

How much sleep you need might just be written in your genes, according to a new a study. Researchers have discovered a genetic mutation that appears to allow some people to get by on less sleep than others.