has anyone seen an "inconvient truth"... a documentary bout global warming. at first i was skeptical at this documentary because al gore was star of it, and i thought it was just a political movie. but the data he presented was really convincing.. he gave us a window of 10 years to curb green house emmisions before i becomes unmanagable and its bye bye earth.. in 50 years the possible scenarios are, greenland melts and sea water rises 20 ft, or a part, only a part of antartica melts and 20 ft. rises.. the fresh water in greenland that melts will go to the atlantic ocean, thinning the density of the ocean causing the so called "great ocean conveyor belt" to stop moving causing the hot air in the earth also to stop moving, which will cause the earth to cool down to another ice age.
we can never tell what will happen in the future, but if we do not do something now, the day after tommorow scenario is a real possibility..
here is a more detailed explaination:
http://www.commondreams.org/views04/0130-11.htm
also please visit to see the other effects of global warming such as melting of glaciers:
http://www.worldviewofglobalwarming.org/