Holy MacCready life

Paul MacCready (1925-2007) Paul MacCready is an American aeronautical engineer and creator of numerous inventions such as the first functional human-powered airplanes in the 1970s. From an early age, Paul MacCready was an enthusiastic builder of

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Holy Kordesch life

Karl KORDESCH (1922-2011) Some objects are so much a part of our daily lives that we don’t even think about them. Alkaline batteries are among these irreplaceable “utilities”, even if one of their characteristics is

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