Gusher!

Humans are Earth Cancer. No question. Nothing really scares me except radiation poisoning, and I got immune to that hiding under my desk in like the fourth grade and they could still pray in public schools then (c. 1960) which would have worked just as well. The only thing that will save the environment is a really big war or  slight mutation in the HiV virus recombined with the cold virus so it gets spread by coughing. Or they activate skynet...To err is human, to really fuck up requires an engineering degree.