Ben, you make a good point. Even if the current climate change is our fault (plenty of reason to think it is), we won't kill the planet. We might mess it up to the point where we mostly wipe ourselves out.

Remember, it isn't about saving the Earth, or the whales, or the ozone, or the rainforest. It's about saving the humans. Which means, save the ozone, the rainforest, the plankton, et. al. Save the whales if for no other reason they cool to listen to, and might actually be as smart (or smarter) that we are.

After all, who wants to take third place after the rats and cockroaches duke it out?