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If Martha Coston had't invented the flare, many people would have died lost in the sea.
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If Marie Curie hadn´t studied radioactivity, chemistry would have known only 116 elements.
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If Grace Murray Hopper hadn't developed computer programming, the use of modern programming language would have been very dificult.
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If Hedy Lamarr hadn´t invented a secret system of communication during the Second World War, the Allies would have had many difficulties to win.
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If Rita Levi-Montalcini hadn't been such a great neurologist, science would not have known the Nerve Grow Factor.
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If Bette Nesmith Graham hadn't invented Liquid Paper, we would not have been able to correct our writting mistakes.
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If Stephane Kwolek hadn't invented an strong fiber called Kevlar, the development of modern tires and bulletproof vests would have been imposible.
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If Gertrude Belle hadn't invented new medicines, many people would have died of illnesses like malaria and leukaemia.
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If Barbara McClintock hadn't discovered jumping genes, science would have only a partial understanding of DNA.
