Noun
any period of time during which glaciers covered a large part of the earth's surface
Source: WordNetFrom a scientific perspective there is some indication that a nuclear war could deplete the earth's ozone layer or, less likely, could bring on a new Ice Age - but there is no suggestion that either the created order or mankind would be destroyed in the process. Herman Kahn
We should remember that the last time global temperature was 5C different from today, the Earth was gripped by an ice age. So the risks are immense and can only be sensibly managed by reducing greenhouse gas emissions, which will require a new low-carbon industrial revolution. Nicholas Stern, Baron Stern of Brentford
Those numbers ay not sound like a bid deal until one reflects that average global temperatures were "only" 5 degrees cooler at the height of the last Ice Age. Jared Diamond
You know, my science is limited to the fact that I know that eons ago there was an ice age ... I know that for sure. I know that at one time, the Arctic was the tropics. And I guess I wonder what caused that? Was it dinosaur farts? I don't know. Ralph Klein
Remember in 1973 the same science chatter said that the coming Ice Age is going to occur, we're going to lose millions of people. And the politicians knew how to solve it, they just didn't have the courage to solve it; they were going to put coal dust on the Arctic. Don Young
Often extinctions in the ocean occur at the same time as those on land. Then again, the ice age extinctions lost many big animals, but not many sea faring ones. Robert T. Bakker