All I can say is
were it not for global warming - we would still be living in the ice age. While I think it good that we study the earth and its climate - I think it arrogance state such a problem as global warming and then say that Humans are the only ones who can stop it! How many ice ages have come and gone before Humans ever appeared on the planet!?!?!?!
TO say that we must change the way cars use energy - will that really fix things?
Better yet - lets get rid of all the cows since they put out as much if not more methane gas (and other) than all the cars on earth.
The earth is an aging planet same as all others. Its not like we can give her a botox shot or plastic surgery -- and even then - we are simply covering up a "problem" in ourselves that keeps on going.
Lets say its true what AL Gore and the rest of them spout out with Global warming. Wouldn't our time and dollars be better spent researching how man can survive in a warming climate instead of looking for some planetary fountain of youth or -- or worse yet -- taking it upon ourselves to fix something that may not even be a problem - just a planetary way of life.