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When dogs show the whites of their eyes in a "half-moon" shape it can indicate stress. Kristina Stas/iStockphoto.com hide caption

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Kristina Stas/iStockphoto.com

Let's Not Hug It Out With Our Dogs

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Efforts aimed at teen drinking and driving help reduce deaths, but so do broader alcohol control efforts. Roy Morsch/Corbis RM Stills/Getty Images hide caption

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Roy Morsch/Corbis RM Stills/Getty Images

The Large Hadron Collider uses superconducting magnets to smash sub-atomic particles together at enormous energies. CERN hide caption

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CERN

Weasel Apparently Shuts Down World's Most Powerful Particle Collider

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Sharon Long in her workshop. Courtesy of Sharon Long hide caption

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Courtesy of Sharon Long

Reborn At 40, She Uncovered New Life In A 'Dream' — Looking At Skulls

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Ashley Madison Hack Inspires Social Scientists To Look Behind The Names

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Tracy Smith, 38, and her children Hazel, 8, and Finley, 5, at their home in Houston. Smith is pregnant with twins and says she's a little more worried than usual about the approach of mosquito season. Carrie Feibel/Houston Public Media hide caption

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Carrie Feibel/Houston Public Media

In Houston, Pregnant Women And Their Doctors Weigh Risks Of Zika

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Months after a concussion or other traumatic brain injury, you may sleep more hours, but the sleep isn't restorative, a study suggests. iStockphoto hide caption

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iStockphoto

A Concussion Can Lead To Sleep Problems That Last For Years

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The earliest records of tiger nuts date back to ancient Egypt, where they were valuable and loved enough to be entombed and discovered with buried Egyptians as far back as the 4th millennium B.C. Now, tiger nuts are making a comeback in the health food aisle. Nutritionally, they do OK. Matailong Du/NPR hide caption

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Matailong Du/NPR