1) That the globe is actually warming
2) That man is causing the warming and not solar cycles, and
3) That global warming would be a bad thing!
However, if spittle flecked invective is more persuasive to you than fact or logic, here's Ed Begley Jr.
Ed Begley, Sr., the great character actor, was apparently a Reagan supporter. In this case, the apple has fallen quite far from the tree!
Cross posted at Say Anything