In 1961, the Soviet Union detonated Tsar Bomba, a hydrogen bomb with a 50-megaton yield—the largest explosion ever created by humans. The blast was about 3,800 times stronger than Hiroshima and ...

On December 11th, 2005, one of the largest peacetime explosions in Europe occurred in Hemel Hempstead, United Kingdom. This documentary explores the disaster that has largely faded from memory and the ...

After its "birth" in the Big Bang, the universe consisted mainly of hydrogen and a few helium atoms. These are the lightest elements in the periodic table. More-or-less all elements heavier than ...