EADS AND THE NAVY OF THE MISSISSIPPIWhen the Civil War began, the Union needed something that didn’t yet exist—ironclad river gunboats. James B. Eads built a whole fleet amazingly fast. by Elmer L. Gaden, Jr.
INVENTING ELECTROCUTIONWilliam Kemmler’s death was meant to demonstrate the superiority of electrocution over hanging. It didn’t. by James F. Penrose
HOW WE GOT FROZEN FOODClarence Birdseye found a simple, effective way to produce frozen food, but that was just the first step. by Rudi Volti
DEEP-SEA DIVING A CENTURY AGOLong before scuba, divers relied on simple equipment and lots of guts. An air hose and a rope were all that kept them from a watery grave. by Kenneth Ackerman
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