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It happens to the best of us: you slog through the summer heat on your morning commute and wind up a messy ball of sweat by the time you make it to the sweet comfort of your air-conditioned office. Now a team of MIT grads is trying to solve that problem by borrowing temperature-control technology from NASA.

If you were to trace human evolution backward in time and space, you'd eventually end up in Africa. There, millions of years ago, animal species evolved to walk upright on two legs and spend more of their lives on the ground than in the trees.

Charles Q. Choi Sea level rise on the U.S. East Coast has accelerated much faster than in other parts of the world-roughly three to four times the global average, a new study says. Calling the heavily populated region a sea level rise hot spot, researchers warn that cities such as Boston, New York, Philadelphia, and Baltimore could face a more flood-prone future.

Wayne Maddison was 13 years old when he fell in love. Standing on the shore of Lake Ontario in Canada, he noticed a mat of grass float by. On top of the mat was a spider about the size of a dime, withmetallic green jaws. "She looked up at me," recalls Maddison.

Recent reports that two teams of scientists had genetically altered a deadly virus to make it more contagious have provoked fear, even outrage, in some quarters. Biosecurity advisers to the American government, which paid for the research, have urged that full details not be published for fear that terrorists could make use of them.

A little after 9 a.m. on Sept. 15, 1990, the owner of a steel-products company pulled up to her office in Vinegar Hill, near the Brooklyn Navy Yard, and spotted a black garbage bag sitting on the sidewalk out front. She parked her car and went to move the bag when she noticed it leaking blood.