What Countries Have Nuclear Weapons? http://testu.be/1WD9g7P Fallout from Fukushima: The Radioactive Exclusion Zone http://bit.ly/1T4Yrev Subscribe! http://bitly.com/1iLOHml Since the Cold...
========== On July 16th, 1945 the first ever nuclear
weapon was detonated in a New Mexico desert. At the time, the Trinity test was one of the
largest manmade explosions ever. Nuclear blasts are measured in TNT, and this one yielded
about 20 thousand tons of TNT. That size blast would cover an estimated area of about five
square miles in radioactivity. But in the 70 years since, nearly 2,000 nuclear tests
have been performed, and about 125,000 nuclear bombs have been built. So we wanted to know,
how powerful are modern nuclear weapons? Well, most people think of the nuclear bombings
of Hiroshima and Nagasaki during World War Two as extraordinarily powerful explosions.
Combined, they yielded about 36 thousands tons of TNT. But 16 years later, the Tsar
Bomba was built, des...