I heard a report somewhere (damn if I can remember where now) that stated that the #1 source of global warming was methane. They also stated that the #1 source of methane was farts, and they stated that the biggest source was cow gas (I am NOT making this up!). [img]graemlins/fart.gif[/img] Has anyone heard this report?
I look at it this way, you reap what you sow. We have spent the past 150+ years in rapid technological development, not really caring about the long term effects. Now we will begin to see some of the results. And in the long run, it really doesn't matter. The climate will change, some species will die off, and others will replace them. Same thing happened to the dinosaurs.
Go watch the George Carlin standup where he talks about the environment. He ends the show with it, and his big point is that the planet will survive just fine without us, and when it doesn't want us anymore it will shake us off like fleas. I love when he states that maybe the planet put us here just to make plastic.
The point? Things are always changing, and have always been changing. Things come in to influence the direction of these changes, but in the end the overall system will go on, with or without us.