NASA Completes Year-Long Mars Simulation In Hawaii

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When a person places a finger in the slot on the left, the robot uses an algorithm — unpredictable even to its creator — to decide whether to prick the finger with the pin on the end of its arm. Alexander Reben hide caption

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A Robot That Harms: When Machines Make Life Or Death Decisions

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Careful audits of a representative sampling of bills from 37 Medicare Advantage Programs in 2007 have revealed some consistent patterns in the way they overbill, a Center for Public Integrity investigation finds. Nick Shepherd/Ikon Images/Getty Images hide caption

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Residents of Valdivia, Chile, look over wrecked buildings on May 31, 1960. AP hide caption

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When The Biggest Earthquake Ever Recorded Hit Chile, It Rocked The World

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Invincible Iron Man — featuring the debut of a new hero, Riri Williams — is one five books Marvel is using to promote science, math, and arts disciplines through a series of covers. Courtesy of Marvel hide caption

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On display at ZooAve Animal Rescue in Alajuela, Costa Rica, Grecia, the chestnut-mandibled toucan, can now eat on its own and sing with the new beak. Grecia was in rehabilitation for months after receiving a 3-D-printed nylon prosthesis. Carrie Kahn/NPR hide caption

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After Losing Half A Beak, Grecia The Toucan Becomes A Symbol Against Abuse

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National Day Of Mourning Commences In Italy After Earthquake

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Ramen will buy anything from smuggled fruit to laundry services from fellow inmates, a study at one prison finds. It's not just that ramen is tasty: Prisoners say they're not getting enough food. DigiPub/Getty Images hide caption

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Rough seas prevented the NOAA's Okeanos Explorer from collecting data in the the Papahānaumokuākea Marine National Monument in February. NOAA Office of Ocean Exploration hide caption

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Take it one syllable at a time: Papahānaumokuākea

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Lenroy Watt talks with residents of Miami's Little Haiti about Zika, leaving brochures in Creole about how to prevent the illness, as well as phone numbers for local mosquito control agencies and the county health department. Courtesy of Planned Parenthood hide caption

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Planned Parenthood Joins Campaign To Rid Miami Neighborhoods Of Zika

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These are insect cells infected with the Guaico Culex virus. The different colors denote cells infected with different pieces of the virus. Only the brown-colored cells are infectious, because they contain the complete virus. Michael Lindquist/Cell Press hide caption

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Native Americans Protest New Oil Pipeline In North Dakota

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A pneumatic network, in red, is embedded within the octobot's entirely soft body and elastic arms, in blue. Ryan Truby, Michael Wehner, and Lori Sanders/Harvard University hide caption

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By testing tumors, researchers hoped to identify women who could avoid chemotherapy without increasing their risk of a cancer recurrence. Voisin/Phanie/Science Source hide caption

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Study Of Breast Cancer Treatment Reveals Paradox Of Precision Medicine

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Douglas Eberhardt for NPR

Oil #5: Imagine A World Without Oil

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