An ice age can be a result of a nuclear winter or natural forces.
"One month does not a nuclear winter make," he added.
Concerns about nuclear winter arose in the early 1980s from several reports.
For the moment, fortunately, there's no such thing as nuclear winter, either.
Within two months of the war, Britain is gripped by a nuclear winter.
"Still, I'll bet a bunch of them could create something just like nuclear winter."
IN the market for initial public offerings, nuclear winter appears to be over.
Apparently we have avoided that nuclear winter in the near term.
Rather, the nuclear winter after such a war would lead to mass starvation, killing most of the world's population.
This plunged the Earth into a 'nuclear winter' of five years duration.
