By Ryan BradleyPosted 01.17.2012 at 3:59 pm 2 Comments
Sten-Christian Pedersen oversees the northernmost antenna array on Earth, 25 dishes tracking about 100 satellites on the small archipelago of Svalbard, 500 miles south of the North Pole. Even when the winds are –76°F and visibility is 10 feet, Pedersen drives to the satellite station. When there is a risk of avalanche, he takes a helicopter. When there are polar bears, he carries a firearm.
A prolonged chill in the atmosphere high above the Arctic last winter led to a mobile, morphing hole in the ozone layer, scientists report in a new paper. It's just like the South Pole hole we all studied in school, but potentially more harmful to humans — more of us live at northern latitudes. Here are five things you need to know about it.