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Some ethicists and consumer watchdog groups worry that the newly revised federal rules governing medical research don't go far enough to protect the rights and privacy of patients. Dana Neely/Getty Images hide caption

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Dana Neely/Getty Images

Alchemist Hennig Brand looks focused, if maybe a bit drained, in this 1795 painting by Joseph Wright. The painting depicts Brand's discovery of the chemical element phosphorus. Joseph Wright of Derby/Wikimedia hide caption

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Joseph Wright of Derby/Wikimedia

Phosphorus Starts With Pee In This Tale Of Scientific Serendipity

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Researcher John Clements in the early 1980s, after he figured out that lungs need surfactants to breathe. David Powers/Courtesy of UCSF hide caption

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David Powers/Courtesy of UCSF

How A Scientist's Slick Discovery Helped Save Preemies' Lives

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Pluto Discoverer's Hometown Throws Big Bash For (Non-Dwarf!) Planet

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