Is Global Warming even really happening? If it is, is it a bad thing? Read This and consider that in reality, the jury is still out on many of these issues. Remember that scientific models can't *prove* anything. A guess by a scientist as to what will happen to our climate in the future, no matter how well-credentialed the person is, is still just a guess.
BTW- this applies to lots of things besides global warming. Take, for instance, marijuana prohibition. Marijuana does not cause people to move on to harder drugs. It does not cause brain damage. (in fact, cannabnoids have been shown to have neuroprotective effects, and in some cases to even stimulate neurogenesis). Consider this a wake up call. Repeating a lie over and over does not make it any more true. The government is using your tax dollars to lie to you. Fight back. Be informed. Separate yourself from the herd.