One can call it climate change, or be more inclusive like I am and call it ecosystem catastrophe, but everyone but out-and-out lunatics knows we've broken nature. We've already killed well over half of everything - yes, really, over half of all wildlife which existed on Earth on my 25th birthday is gone today, through a combination of extinction and population collapse. Same with birds. I think bugs it's worse. Go drive in the country at night and - used to be the bugs would blind you. Not now.