The discovery of insulin in 1921 transformed Type 1 diabetes from a fatal disease to a manageable condition.
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In 1953, Watson and Crick described the double-helix structure of DNA.
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The development of chemotherapy advanced cancer treatment.
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Nothing can travel faster than light in a vacuum.
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Positive reinforcement can strengthen certain behaviors.
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The mapping of the human brain has advanced neuroscience.
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In 1954, a scientist allowed himself to be bitten by mosquitoes to study malaria transmission.
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The first birds evolved from small theropod dinosaurs.
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