"A real bummer"

So, you know how nuclear bombs are bad and all that? And how it would be really bad if a country were to use them? Yeah, turns out it would be worse than we thought. Like, "oops, there goes a large chunk of the ozone layer" bad. Over a quarter of the ozone layer in 2 years if 100 Hiroshima-sized nuclear bombs went off. My question is, how big are the warheads we've got in store today compared to the "Hiroshima-sized" ones being used to create this statistic? Anyway, here's the unsettling article:


http://www.wired.com/wiredscience/2011/02/nuclear-war-climate-change/

-Caitlin