OK, let's ask them.  Hiroshima - 1 million in 2010, Nagasaki - 1/2 million in 2014, Chernobyl - densest concentration of wildlife in entire continent today. Fukushima - 570 people died from radiation over 5 years! 
Nuclear weapons and nuclear power are dangerous, insanely so, but we should have an honest, rational discussion of the risks and not resort disproven, apocalyptic hand-wringing.