Climatologists have warned about fresh water from melting tundra and glaciers entering the north Atlantic and slowing or shutting down the Meridional Overturning Circulation and causing colder winters or even an ice age for over 30 years now. You deniers make fun of this all the time so you know it's true.
January 2011 was the warmest January ever recorded in the Arctic. The record cold and snowfall all across the northern temperate zone is the result of weather patterns dramatically shifting due to Arctic heating and melting.
Americans don't know jack about global warming and resulting climate change because most Americans are scientifically illiterate.
Obviously you've never heard of stromatalites -- rocks that a billion years ago singlehandedly formed an oxygen atmosphere on Earth. Google it.
Also you know nothing about "Rock Weathering" -- a significant atmospheric CO2 remover.
You are a perfect example of scientific illiteracy, which research shows is epidemic in America.