"Positive Feedback Loop"

I find myself really liking this new magazine - Seed. It contains more of science technology infused articles. Today I learned about the surprising affects of global warming on the rain forests.

An excerpt from the article:

"CO2 causes warming which slows growth, which reduces CO2 update, which causes warming." --> "positive feedback loop"

I was quite surprised by the findings. I think majority of us think if we plant more trees now it'll help with the whole global warming issue. But now with this new knowledge, the future doesn't look so green anymore. The concern is that we still do not have the capability to predict when will we finally cross that tipping point. That's when the affects of global warming will be irreversible.

Will 80 degree weather in the winter on the Northeast be considered typical?

Time will tell and it might be soon.