Quote Originally Posted by Drew View Post
What? Even if all the polar ice melted it's not an extinction level event. Not to mention that if we started to see real significant earth altering ice melt we have the capability to engineer solutions on a planet wide scale that could cool the planet.
You're assuming Human survival is independent of other creatures. A couple degrees to kill off insects or other relatively inconsequential critters would be enough to cause a catastrophic impact when you consider their impact to plant flower's fertilization process.