Studies keep finding a racial gap, but they don't explain why whites tend to sleep better.
Scientists were preparing to send Curiosity on its first test drive over the billion-year-old rocks of Mars and said a busted wind sensor wouldn't jeopardize its mission of determining whether life could exist there.
On paper, Samsung's Galaxy Note 10.1 boasts an impressive array of features and capabilities. But bigger isn't always better.
In a few weeks, about 2,800 cars, trucks and buses will start talking to each other on the streets of Ann Arbor, Mich., in a giant experiment that government officials are hoping will lead to safer roads.
For one family, an exotic summer getaway means living on Mars.
NASA's Curiosity rover has zapped its first Martian rock, aiming its laser for the sake of science.
Potentially good news for the 45 percent of Americans who have Type O blood: Researchers said that those people appear to have a slightly lower risk of developing heart disease than those with Type A, B or AB blood.
A new online tool, called iBatsID, will help researchers classify and track various bat species across Europe. Looking at bats offers key information about biodiversity. "Bats are like a heart monitor for the environment," said Charlotte Walters of the Zoological Society of London. "If bat populations are declining, we know that something is wrong." NEW YORK TIMES
Researchers say increasing amounts of underwater noise, largely from shipping traffic, are enveloping rare right whales in "acoustic smog" that makes it harder for them to communicate.
Radiation that leaked from the Fukushima nuclear plant following last year's tsunami caused mutations in some butterflies — including dented eyes and stunted wings — though humans seem relatively unaffected, researchers say.
Experts credit the drop to power plant operators switching from coal to natural gas.
Long ago, at a pre-Columbian center across the Mississippi River from present-day St. Louis, people were imbibing a caffeinated beverage known as "black drink." The chemical residues found in their porous, ceramic mugs tell the tale. For the first time, researchers have found direct evidence that the use of drink goes back as early as A.D. 1050 at what is now Cahokia, Ill. The chemical analysis identified the primary ingredients: caffeine, theobromine and ursolic acid -- or toasted holly leaves and bark. NEW YORK TIMES
Curiosity is going to have a four-day "brain transplant," an update that will give it the ability to use the geochemistry lab's sampling system, and to drive. The update had to wait until the rover landed because its processor, built years ago to withstand the harsh environment of interplanetary space, is limited, said senior software engineer Ben Cichy. "My phone has a processor that is 10 times as fast as the processor that's on Curiosity and has 16 times as much storage. ... And my phone doesn't have to land anything on Mars."
North African Jews are more closely related to Jews from other parts of the world than they are to most of their non-Jewish neighbors in North Africa, a study has found.