Arctic temperatures hit 2,000-year high

The 1990s were the Arctic’s warmest decade in the past 2,000 years, says a study released in Friday’s edition of Science. The warming — due to the release of greenhouse gases into the Earth’s atmosphere — overpowered a natural cooling trend that should have otherwise continued.

Full Story: http://blogs.usatoday.com/sciencefair/2009/09/arctic-temperatures-hit-2000year-high.html