275933-88e04010-1140-11e4-9633-5d2eb5bc90d6IT’S a horrifying scene burned into our collective conscious: A flash of light, a blast of hot air and a ballooning mushroom cloud. But there’s much more to a nuclear war, as a new study reveals. Filmmakers and novelists have been tackling the subject for decades. Some have been somewhat sanitised in their approach (Jericho, 2006). Others have been brutally confronting (Threads, 1984, and The Road, 2009).All have simply speculated about the fate of life on Earth after an apocalyptic nuclear exchange. Now, a team of US atmospheric and environmental scientists have taken a detailed look at exactly what all that dust, ash and debris in the air means. More