Also coastal cities are toast because the United States government has already stated that a large enough nuclear detonation at sea out could cause a tidal wave as big as 120 feet tall going 300 miles an hour. So you can pretty much say that cities like San Francisco and Hong Kong are as good as gone with a single detonation.

Also you forgot to take into account High altitude detonations which causes a bigger EMP effect, Permanently knocking out power in large enough areas as say New York City. This would cause Hospitals, Grocery Stores, Gas Stations and Sewage Facilities to all fail, effectively killing millions in the long run with a single high altitude det.

ALSO are you really dumb enough to not realize the effect of nuclear radiation!? God this article makes me so angry it should be taken down immediatly! You are spewing nonsense and false information into everyone that sees this!

http://news.softpedia.com/news/Regional-Nuclear-War-Would-Destroy-the-World-82760.shtml

….just sayin…

Ever heard of nuclear fall-out? Nuclear winter?
Detonations are only the small part of the picture. Nuclear weapons don’t work their way towards destruction m² per m². The radioactivity kills far beyond the actual destroy range.
Also, you cannot count all nuclear weapons to be 200 times as powerful as Hiroshima’s. That one hat approximately 15 kt TNT-equivalent. The maximum just as well isn’t a good indicator, but the biggest such bomb ever detonated had a 59 mt TNT-equivalent, which is almost 4000 as much, its shock-waves were measurable on their third round around the earth.

For a good assessment of how many nuclear warheads have to be detonated to wipe out humanity, take 4 minutes and have a look at this interview: http://npt-tv.net/index.php/video/on_the_consequences_of_nuclear_war

But please, do not soothe yourself nor any readers with headlines like “I stopped worrying”, because the weapons stationed around the globe and in submarines, mounted on ICBMs etc. can wipe out the entire earth many, many times over. What you talk about is melting every spot away. You don’t need to melt away the earth underneath your feet in order to kill the human population. It is enough to worsen the conditions for agriculture, dim the sunlight, hinder rainfall, on top of the destruction of major hubs and communication/transportation lines.