A tank shaped like a metal ball? The Kugelpanzer was one of Nazi Germany’s oddest inventions—built once, seen rarely, and shrouded in mystery ever since. Donald Trump's executive order changing ...
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Inside the Strange World of Albert Einstein’s Inventions and Patents: From Refrigerators to Blouses
Albert Einstein’s name has become shorthand for genius in theoretical physics. We tend to picture him scribbling equations ...
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