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Each year, Jan. 1 falls on a different day of the week, and the entire following year shifts accordingly. Schools, sports teams, businesses and banks spend many hours and millions of dollars calculating on what day of the week certain dates will fall, to schedule holidays and set interest rates... Two professors have proposed a calendar in which each 12-month period is exactly as the year before, on into perpetuity.

Scientists say they have found evidence of the existence of the Higgs boson, a never-before-seen subatomic particle long thought to be a fundamental building block of the universe. In a highly anticipated press conference, researchers announced that two independent experiments at the Large Hadron Collider in Geneva have turned up signs of the so-called "God particle."

An Israeli scientist won the Nobel Prize in Chemistry for changing the prevailing views about the atomic structure of matter with his discovery of quasicrystals. Dan Shechtman, 70, of the Technion-Israel Institute of Technology in Haifa, will get the 10 million-kronor ($1.4 million) award, the Royal Swedish Academy of Sciences said at a press conference in Stockholm today.

Three U.S.-born scientists won the Nobel Prize in physics on Tuesday for their studies of exploding stars that revealed that the expansion of the universe is accelerating....

Warming up on its solar cycle, the sun uncorked a a strong solar storm that reached Earth on Monday, federal scientists said, posing a threat to satellites and radio communications, although no interruptions had been reported to date.

In just three weeks, gamers deciphered the structure of a key protein in the development of AIDS that has stumped scientists for years.

Facial recognition isn't just for humans anymore — similar programs run on apes could help park rangers help identify chimps and gorillas, scientists have found.

A massive, long-ago extinction was once thought to have been caused by a destructive wave of volcanic activity. Scientists now point their fingers at another culprit. A giant, deadly “Earth burp.”

Scientists are closing in on a long-sought goal: A blood test to screen people for Alzheimer's disease. An experimental test did a good job of indicating how much of the telltale Alzheimer's plaque lurks in people's brains, Australian researchers reported Wednesday. If the test proves accurate in larger studies, it could offer a way to check people having memory problems to see who needs more definitive testing for the disease.

Scientists say within a few years, a simple cheek swab could allow health experts to create individualized diet plans for people based on their ...