Originally Posted by Curly

Yeah, I buy it. I don't think anyone doubts nuclear proliferation, and there's such a mountain of evidence for global warming that people who deny it's happening are doing so either for political reasons or for head-in-the-sand reasons. Nuclear, and the world changes dramatically and suddenly; global warming, and the world changes dramatically and not-so-suddenly. Either way, the planet is changed, and not for the better.

Yes, adding "global warming" to the Doomsday Clock gets them more press coverage. But that doesn't mean it isn't completely legitimate to add something to the clock that over time could have similar results for the planet that a nuclear war could have.

Just a couple of weeks ago it was reported - Ancient ice shelf breaks free from Canadian Arctic - that "A giant ice shelf the size of 11,000 football fields has snapped free from Canada's Arctic, scientists said."