At their core, nuclear weapons are devices designed to release an enormous amount of energy through nuclear reactions, either by splitting atoms (fission) or combining them (fusion). President Trump’s threat on Wednesday to restart the testing of nuclear weapons has raised numerous knotty questions about national and global security. The United States spends tens of billions ... Atomic bomb - Nuclear Weapons, Hiroshima, Nagasaki: The first atomic bomb was built in Los Alamos, New Mexico, during World War II under a program called the Manhattan Project. Los Alamos was approved as the site for the main atomic bomb scientific laboratory on November 25, 1942, by Brig. Gen. Leslie R. Groves and physicist J. Robert Oppenheimer and was given the code name Project Y. One bomb, using plutonium, was successfully tested on July 16, 1945, at a site 193 km (120 miles) south of ... Nine countries hold the 13,000 nuclear weapons in the global stockpile. That's less than during the Cold War but it doesn't change the fact that these bombs are still a threat to global humanity. So how do they work and are we close to nuclear war?
