De Rozier's experimental system consists of a hydrogen balloon and a hot air balloon tied together ... 1794-1945—Balloons Used in Wars: From the U.S. Civil War, through World Wars I and II ...

The year: 1861. The problem: Pro-slavery states had broken away from the Union, rising up in armed revolt as the treasonous ...

The story of how Thaddeus Lowe reinvented reconnaissance at the encouragement of President Lincoln. Who Was the Real Cleopatra? Fact or Fiction? The Legend of the QWERTY Keyboard What Does a ...

The story of how Thaddeus Lowe reinvented reconnaissance at the encouragement of President Lincoln. Ask Smithsonian: What Are the Weirdest Things Pregnant Women Crave? Remembering the Birmingham ...