What would happen if your town got nuked?
Not that it's particularly likely, but as long as nuclear bombs exist, there's the chance - however slim - that one might go off somewhere near you. This little Google Maps overlay might be a bit morbid, but it's also pretty fascinating. It shows you the heat, pressure and fallout spread of a range of different nuclear bombs detonating anywhere in the world. It's particularly sobering to get a sense of the scale of the devastation caused by the Hiroshima and Nagasaki bombs in World War 2 - and then see how tiny those bombs are compared to the USSR's enormous Tsar Bomba, the biggest nuke ever detonated.
What would happen if your town got nuked?
