Unusual weather ripped a sizable hole in the ozone layer above the Arctic last winter, exposing people in northern Russia, parts of Greenland and Norway to high levels of UV radiation. Human activity did not cause the hole's sudden appearance, scientists said in a report released Monday. (more)
By now, we all ought to be aware that making like Tater Tots and browning ourselves, whether the natural way or on tanning beds, isn't a recipe for optimal health. So why do some people still do it, sometimes to excess? Turns out aesthetics may not fully explain the tanning phenomenon.