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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.

As the East Coast bakes in triple-digit heat, you can bet it's even more stifling in the asphalt and concrete jungles of cities like New York and Washington than in nearby rural areas. So cities nationwide are increasingly turning to "cool" building materials to ease what's known as the urban heat island effect.

President Obama was never considered a front-runner for this year's Nobel Peace Prize. But the names of the nominees are kept secret, which fuels a vigorous guessing game each year before the announcement.

How do we manage information and privacy in the electronic age? As part of our monthly segment on ethics in science and technology, we'll explore how our information is tracked, used and protected.

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 Senate and House health care overhaul bills are each about 2,000 pages long. While the bills are mostly aimed at revamping the health insurance system, tucked in the pages are provisions that would spell big changes for the food, drug and medical device industries, too.

The outcry from the late January deaths of 15 young people in Juarez has led President Felipe Calderon to pledge to pump millions of dollars into civic programs in what's become one of the deadliest cities in the world.

There has been hope and speculation that Asian countries, particularly China, might step in and buy stakes in failing U.S. financial institutions. China is the world's fastest growing economy, and it has the world's largest foreign exchange reserves. But for now, China is not expected to rush to the rescue.

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

How do satellites help us understand oceanic trends? NASA's Michael Freilich explains the future of satellite oceanography. He also tells us the impact of accurate measurements to forecast ocean condi