So, do you propose we kill off a significant portion of humanity by lottery, war, or some other method of selection? Do we just stop all industry and let nature work itself out instead?

You're in control after all.

edit: sarcasm aside... my entire point is that the guilt itself isn't healthy and does no good for anyone. Yes, there are things that can probably be done, but alarmism, blame and guilt cycles do nothing to help anyone.