Things can take a turn for the worse, but it world will recover for it. Sooner or later.

I think climate change is our biggest threat, bigger than NSA, Russia dick waving and War on * combined. The longer we ignore it or pretend its not our fault the longer will it take for us/world to recover.

EDIT: By us I don't necessarily think humanity, but the environment overall. I hope humanity will survive, but I'm not deluding myself.