If you believe in it, because you can't possibly prove it, then you'll also believe in human caused global warming!!!
And if you'll believe that, you'll believe just anything at all!!! Or else, it's just some liberal wishful thinking!!!
Are you guys suffering some supposed shortage of navigable waters? Why can't you admit that rafting and kayaking would be up a creek without a paddle if it weren't for dams deferring flows in streams until late in summer and early fall???
As for AGW... my tag says it all!