Chris Stephens, 28, who has been battling depression all of his life, plays with his dogs at home in Concord, Calif., on Friday. After a dose of ketamine, Stephens says, "I actually wanted to do things. I wanted to live life." Lianne Milton for NPR hide caption

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'I Wanted To Live': New Depression Drugs Offer Hope For Toughest Cases

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Nonnative pythons, like this one, are invading the Florida Everglades. As a top predator, the snakes have crippled the populations of rabbits, raccoons and other animals. Joe Raedle/Getty Images hide caption

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Invasive Pythons Put Squeeze On Everglades' Animals

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Native Americans As Slaves, Slave Owners In North

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Ketamine has been used as an anesthetic for decades. It's also a widely popular but illegal club drug known as "Special K." When administered in low doses, patients report a rapid reduction in depression symptoms. Huw Golledge/flickr hide caption

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Could A Club Drug Offer 'Almost Immediate' Relief From Depression?

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Ancient Skull Holds Clues to Dog Domestication

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Can Science Be Done Without Secrecy?

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Stem Cell Eye Therapy Shows Promise

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Ode To Ice

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Magnetic Soap May Help Clean Up Spilled Oil

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Even in the remote Faroe Islands, some children have high levels of perfluorinated compounds in their blood. The chemicals may interfere with the immune system. Stig Nygaard/Flickr hide caption

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Common Chemicals Could Make Kids' Vaccines Less Effective

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How Large Ships Use Navigation Systems

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Synthetic Windpipe Transplant Boost For Tissue Engineering

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