The idea of the Higgs particle was proposed nearly 50 years ago. It was discussed almost as a curiosity, to get around some inconsistencies between predictions and theory at the time in particle physics, that if an otherwise invisible background field exists, permeating empty space throughout the universe, then elementary particles can interact with this field.
And then there were none. Lonesome George, known as the sole surviving Pinta Island tortoise, died in the Galapagos, possibly of heart failure. He was 100 or thereabouts. He may have been Earth's rarest creature, but Lonesome George's fate has been a common one for megafauna ever since humans came along. The Americas were once a dreamscape of giant mammals, from bears the size of Ford Explorers to giant sloths larger than today's elephants. They all disappeared around 10,000 B.C., not long after the first people are believed to have made their way down from the Bering land bridge.
In a group of women older than 65 who had gained weight over 4 years, those whose levels of the vitamin were low had gained a little more weight, researchers said in a study published online by the Journal of Women's Health. The researchers say more study is needed about any possible connection between weight and vitamin D.
In an attempt to replicate the early experiences of infants, researchers in England have created a robot that can learn simple words in minutes just by having a conversation with a human. The work, published in the journal PLoS One, offers insight into how babies transition from babbling to speaking their first words.
People with HIV have more than four times the risk of sudden heart attack as their uninfected peers, and they have them earlier in life, cardiologists reported in the Journal of the American College of Cardiology.
Scientists reported in the journal Nature that they have spotted hints of a methane-rich lake and several ponds near the equator of Saturn's biggest moon. It was long thought that bodies of liquid would evaporate at Titan's midsection. But the analysis suggested the presence of a 927-square-mile hydrocarbon lake. Said scientist Caitlin Griffith: "Titan may have oases."
Forgotten notebook reveals discovery, mentor's betrayal
In a surprise find, scientists say they have spotted hints of a methane-rich lake and several ponds near the equator of Saturn's biggest moon.
Planet or not, Pluto and its newest moons may tell us a lot about how other worlds orbit distant stars.
CT scans in children can cause small but significant increases in the risk of leukemia and brain cancer, a study finds.
New Yorkers lined the West Side waterfront to welcome the space shuttle Enterprise as it sailed up the Hudson River on Wednesday to its new home aboard the Intrepid Sea, Air & Space Museum.
Like many other online services, Facebook prohibits kids under 13 because of federal law. But that ban is difficult to enforce.