People, please pull your collective heads out of your asses and wake up to some simple facts. Do a bit of research on how our Sun works.
To encapsulate the subtleties that seem to escape the vacuous, brain dead Al Gore groupies, here's how cosmology plays into it all. Forgive me for eschewing subtlety, but here's how the cosmos works.
The Sun is one massive fusion reactor. The more energy it creates, the larger the outer gas cloud, or heliosphere, expands. Now you and I know that such a reaction cannot last forever. But it can wreak havoc on our planet. Geology proves that out, in the form of large and small Ice Ages. It does not matter the number of cow farts or SUV's on the road. What matters is the interaction with the Sun and the Earth.
Geologists will tell you that in the overall scope of things on the Geological Clock, Man occupies the last 2 minutes before Midnight. So please, someone, justify to me how we're screwing up the planet? Earth is fully capable of shedding us off like we're nothing but a fleas. She's proved it time and again. She'll shuck us off like we were nothing. So, tell me: what's to fix?