On August 6, 1945, during World War II (1939-45), an American B-29 bomber dropped the world’s first deployed atomic bomb over the Japanese city of Hiroshima. The explosion immediately.

by Bill Rappleye Tue, April 16th 2013, 2:10 PM PDT Pressure cooker bombs, like the ones reportedly used in the explosions near the finish line at the Boston Marathon, are a common and simple way.