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To humans, ultraviolet (UV) radiation is a menace: we cannot see it, yet it is all around us, increasing our risks of melanoma, cataracts and other ills. It is especially harmful in the upper latitudes, where a thinning ozone layer has become less and less effective at blocking the sun’s UV rays, and ice and snow reflect them back up at us. All these facts have caused biologists to wonder: How have Arctic mammals adapted to handle acute UV exposure--not only tolerating the intense light conditions at the poles, but even using it as an evolutionary advantage

Bob Tway decided to try the Champions Tour because he still enjoyed playing competitive golf. What disappeared in the shift from the PGA Tour was the intense pressure to win.

Severe weather experts at AccuWeather.com are forecasting the intense weather outbreaks in the U.S. to continue beyond April into much of May. According to Severe Weather Expert Meteorologist Henry Margusity, "We see no let-up in the weather pattern that has led to the outbreaks this month." [More]

In the over-exposed world that Tiger Woods inhabits, the intense glare of the Masters offers more comfort than fear for the world's richest athlete.

High-end restaurants have begun adding a new piece of equipment to the kitchen that until recently was found mainly in medical laboratories and university chemistry departments. The bigger versions look a bit like washing machines, but the spin cycle in these ultracentrifuges is a lot more powerful than that of any Maytag. They whirl vials around tens of thousands of times a minute, generating centrifugal forces up to 30,000 times as strong as Earth’s gravity.