Global Warming/ Siberia beginning to thaw

[Windy]

Interesting article about how some scientists now believe that we've reached a no-turn-around "tipping point" in regards to global warming.

http://www.guardian.co.uk/international/story/0,3604,1546797,00.html

Here's the original story in New Scientist:

http://www.newscientist.com/channel/earth/mg18725124.500

[jon]

I guess it's possible that human contributions are messing things up, but I still think natural factors are the biggest culprit. We just don't know enough about past weather to say with certainty what is "typical" for earth's climate. I think there's a lot of room for error in ice core analysis and other methods.

On the other hand, we do have a responsibility to be watching out for the environment.