CHANGING TRAINSRailroads have thrived on moving freight for a century and a half. But today the nature of that business has been transformed. by John H. White, Jr.
MAN IN MOTIONBicycles, motorcycles, aircraft—if it went fast, Glenn Curtiss built it, improved it, and made it even faster. by Carrie Brown
RING MASTERNiels Christensen invented a basic component of modern industry—the
O-ring—entirely alone and without fully understanding how it worked. by George Wise
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