Weapons of the Gods

In 1945, the Japanese cities of Hiroshima and Nagasaki became the first and last victims of the atom bomb, the most destructive man-made force our planet has ever known.Or were they just the latest in a long line of Armageddon-level events? Is it possible that our civilisation is, in reality, just one of many? Did previous cultures blossom, develop and thrive, only to destroy themselves, tens or h...