With tensions high between the United States and North Korea, there has been much speculation in recent days about the effects of a nuclear weapons strike.
How many people would be killed instantly? How many more would die as a result of nuclear fallout? How far can debris from nuclear weapons travel? What impact might even a limited nuclear attack have on the environment and the climate?
You can detonate a variety of weapons from Soviet-era missiles to French warheads and Russian bombs on the "ground zero" of your choice, including Sioux City, at nuclearsecrecy.com/nukemap to get an estimation of fatalities, injuries and blast radius.
According to a model developed by Alex Wellerstein, a professor at the Stevens Institute of Technology in Hoboken, New Jersey, an estimated 6,110 people would die and another 6,290 would be injured if a North Korean weapon tested in 2013 detonated on the surface in Sioux City.
Detonating the B-83, which is listed as the largest bomb in the current U.S. arsenal, would kill and injure tens of thousands more.
Check out the NUKEMAP, a Google Maps mash-up that calculates the effects of the detonation of a nuclear weapon, for yourself.