“We’re not just warming, we’re not just pollution, we’re not just overexploitation, we’re piling it all on simultaneously. That’s why it’s really inaccurate to argue that because there’s been warming in the past that doesn’t count now, because it’s part of the perfect storm. I think that all mass extinctions work that way. I think it’s going to turn out that that’s how all the Big Five work—that lots of things go wrong.
