Arlo, an 11-year-old Apatosaurus, is swept away by a raging river in the Pixar film The Good Dinosaur Pixar hide caption

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These tiny Proteus digital sensors and a wearable patch keep track of how patients take their prescribed medications. It's one example of the growing field of ingestible medical devices. Proteus Digital Health hide caption

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Square CEO Jack Dorsey outside the New York Stock Exchange before his company went public on Thursday. Richard Drew/AP hide caption

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In this Aug. 2014 photo, a chimp sits in a tree at Chimp Haven sanctuary in Keithville, La. Brandon Wade/AP Images for The Humane Society of the United States and Chimp hide caption

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A group at MIT built this tiny package of sensors to collect vital signs as it travels through the digestive system. Albert Swiston/MIT hide caption

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Rajiv Kumar (left), a pediatric endocrinologist, with patient Blake Atkins. The California teenager, diagnosed with Type 1 diabetes, uses Apple's HealthKit to monitor his blood sugar levels and share the information with his mother and doctor. Courtesy of Lucile Packard Children's Hospital Stanford hide caption

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A National Security Agency data center in Bluffdale, Utah. Rick Bowmer/AP hide caption

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Paris Attacks Bring Domestic Surveillance Into Presidential Race

The candidates have mostly stayed away from discussing the National Security Agency's surveillance programs. That's quickly changing.

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Nearly a dozen years since the federal Do Not Call Registry took effect, automated calling systems have exploded. iStockphoto hide caption

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CIA Director John Brennan made this case against encryption on Monday at the Center for Strategic and International Studies in Washington, D.C. Win McNamee/Getty Images hide caption

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Last year, Munirah Small quit her job as a customer service representative to start a cake business. She had lots of repeat customers, but after accounting for her expenses, she found she didn't have much money left over — certainly not enough to pay herself a regular salary. So she applied to Break Fast and Launch to figure out what she could be doing better. Brenda Salinas for NPR hide caption

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