The 79th anniversary of Hiroshima and Nagasaki and the threat of nuclear war.

Maps produced by Alex Wellerstein, a professor and historian of nuclear technology, show that if detonated over downtown Manhattan in New York City, it would effectively vaporize SoHo and the surrounding neighborhoods, with a main blast radius that would level most buildings up to the southern end of Central Park and the riverside areas of Brooklyn and Hoboken, New Jersey.

On 6 and 9 August 1945, the United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki.

The two bombings killed between 150,000 and 246,000 people, most of whom were civilians.

They are the only use of nuclear weapons in a war in history.