From Threads to The Day After, ‘nuclear winter’ has been portrayed in science fiction blockbusters for years – but what would the cataclysmic aftermath of a nuclear attack really be like?
Smoke from the fires started by nuclear weapons would rise into the atmosphere, blocking out the sun.
The resulting perpetual darkness would mean freezing temperatures and crop failure, followed by mass starvation and death.
While it sounds very much like a fictional scenario, an expert describes a nuclear winter