Global warming.

I do believe that the global climate is changing. I believe that it is always changing, but I do think that human activity in the recent years has played a major part in the sporadic weather patterns. U.S.A. used to be the world's largest producer of pollution but because of China's growing industrial power they have surpassed us on the pollution scale. Coal along with petroleum and petroleum bi-products are not solely to blame but are largely responsible to the greenhouse gas that has been emitted into the atmosphere by humans. I think that are many things that we can do to counter the problems that we have caused but like the problems, it will take alot of time to mend.