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Updated: 18 min 10 sec ago

Why Does Time Exist?

Fri, 06/19/2015 - 7:36am

Cosmologist Sean Carroll tackles a deceptively simple question: Why does time exist at all? The potential answers point to a surprising view of the nature of the universe, and our place in it.

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Why Should We Look Forward To Getting Older?

Fri, 06/19/2015 - 7:36am

Psychologist Laura Carstensen says that as people get older, they usually become less stressed and more content.

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When Do We Become The Final Version of Ourselves?

Fri, 06/19/2015 - 7:36am

Dan Gilbert shares research on what he calls the "end of history illusion," where we think the person we are right now is the person we'll be for the rest of time. Hint: that's not the case.

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Once And Future Nut: How Genetic Engineering May Bring Back Chestnuts

Fri, 06/19/2015 - 7:28am

The American chestnut is poised to return — as a bionic, blight-resistant tree. Scientists hope to plant about 10,000 transgenic plantlets to pollinate trees in the "wild."

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Worried You Have An STD? This App Helps You Quietly Find Out

Fri, 06/19/2015 - 6:03am

Planned Parenthood has an app that offers discreet help for Californians seeking to get tested for chlamydia or gonorrhea.

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DNA Tracking Of Ivory Helps Biologists Find Poaching Hotspots

Fri, 06/19/2015 - 4:03am

To stop elephant slaughter in Africa, zoologist Sam Wasser spent years extracting DNA from elephant dung and tissue. Much of the world's poached ivory, he discovered, comes from just three places.

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