U.S. Navy; Achim Mende / Zeppelin In the 1930s, before commercial airplanes began crossing the Atlantic, zeppelins promised to change how we traveled. They could make the voyage in just 43 hours ...

DAN SNOW:Hello, I'm Dan Snow. World War One was the first major conflict where planes played a key role in the fighting. DAN SNOW:Not just to be used in reconnaissance missions, but dropping ...