Alvin Toeffler of “Future Shock” fame was a principal leader of the new Ice Age scare.
Don’t forget Moonbat Sagan’s “nuclear Winter”.
From the years of study I've done on AGW and historical geology I'm strongly inclined to believe we're headed into another glacial cycle, not long-term warming. They can arrive with disturbing speed, at least in terms of geological time. But it does no good to get all excited about either warming or cooling.
The planet has its own thermostat, affected by a multitude of different influences from plate tectonics to axial tilt to orbital variations to sunspot cycles. All we pitiful humans can do is adapt -- or try to -- to whatever comes along. It's totally out of our control.