This artist's rendering shows what the view might look like from one of the three planets orbiting an ultracool, reddish dwarf star just 40 light-years from Earth. ESO/M. Kornmesser/Nature hide caption

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3 Strange Worlds Circling A Cool Star Might Be Prime Spots To Support Life
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For the last time, elephants were used in a performance by Ringling Bros. and Barnum & Bailey Circus last night. The circus elephants are seen here during a show last month in Washington, D.C. Andrew Caballero-Reynolds/AFP/Getty Images hide caption

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What's Good For The Heart Is Good For The Brain
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Forget Talent, Success Comes From 'Grit'
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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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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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The Large Hadron Collider uses superconducting magnets to smash sub-atomic particles together at enormous energies. CERN hide caption

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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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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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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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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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When Personalization Leads To Discrimination On AirBnB
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