Possible Tipping-Points Everywhere!: The Arctic

Possibly, if certain things are happing...or if they happen...then we may hit a tipping-point--and then other conditional things will possibly happen. And possibly if they all happen, we may be screwed. So, you see, it's possible that we're on the very brink of a disaster that doesn't really seem like a threat because we don't see how quickly a bunch of implausible-seeming but totally linked leaps forward can happen. But the real point is: the possible end-point is so terrible that we can't wait around to figure out whether any of the relevant conditionals are true, nor how likely the relevant possibilities are.
   This is a slippery-slope argument, of course.
   Some such arguments are sound, some aren't.