Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. When Hans Hartman, a civil engineer, attempted to film the ocean ...
Prologue: Where did these scorpions come from? -- "Revealing nature's closest secrets": F. Martin Duncan's popular-science films at the Charles Urban Trading Company -- Juggling flies and gravid ...
Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. In the July 1931 issue of Popular Science, writer George H. Waltz ...
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