Global warming changes tundras into forests much faster than anyone…

Well, we knew this was going to happen eventually - but now scientists are actually seeing it with their own eyes. Researchers from Finland and Oxford University have discovered that large swaths of European and Asian arctic tundra are quickly turning into forests. They're attributing it to climate change, but what's… » 6/04/12 10:23am 6/04/12 10:23am