the manhattan project

Atomic bombs were the first nuclear weapons to be developed, tested, and used. In the late 1930s physicists in Europe and the United States realized that the fission of uranium could be used to create an extremely powerful explosive weapon. In August 1939, German-American physicist Albert Einstein sent a letter to U.S. president Franklin D. Roosevelt that described this discovery and warned of its potential development by other nations. The U.S. government established the …

…all, the mass weapons of destruction spread among the globe have enough potential power to destroy every last city on earth. Nuclear weapons, though, aren’t all bad. They have a very important use, for example, in the defense of the earth against meteors and asteroids. People will always have an urge to make a bigger and more powerful weapon… But the truth is they don’t get much bigger than what we have now!