Airplanes, engine-driven vehicles that fly through the air, have evolved in less than a century into one of the most important inventions in history. Every day, airplanes commute people and goods great distances. Over the last 100 years, they have been developed and perfected from simple gliders to ...

The Manhattan Project On the morning of August 6, 1945, a B-29 bomber named Enola Gay flew over the industrial city of Hiroshima, Japan and dropped the first atomic bomb ever. The city went up in flames caused by the immense power equal to about 20,000 tons of TNT. The project was a success. Th...