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Wednesday

Damin Radford of New Zealand overlooks the Oceti Sakowin camp on Tuesday, where people have gathered to protest the Dakota Access pipeline near Cannon Ball, N.D. David Goldman/AP hide caption

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David Goldman/AP

Despite assumptions that peanut, egg and other allergies are becoming more common in the U.S., experts say they just don't know. One challenge: Symptoms can be misinterpreted and diagnosis isn't easy. Roy Scott/Getty Images hide caption

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Roy Scott/Getty Images

Are Food Allergies On The Rise? Experts Say They Don't Know

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The U.S. Supreme Court heard arguments on Wednesday about whether immigrants can be detained indefinitely without a chance to persuade a neutral judge that they are entitled to temporary release. Pool/Getty Images hide caption

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Pool/Getty Images

Supreme Court Tests Whether Detained Immigrants Have Right To Hearing

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U.S. Office of Government Ethics/Screenshot by NPR

Not A Hack: U.S. Office Of Government Ethics Tweets At Trump

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The wildfire continues to burn in the Great Smoky Mountains National Park in eastern Tennessee on Tuesday. Great Smoky Mountains National Park hide caption

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Great Smoky Mountains National Park

Nancy Pelosi Re-Elected As House's Top Democrat

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Donald Trump speaks at his National Doral golf club in Florida. He repeatedly showcased his properties and hotels throughout the presidential campaign. Evan Vucci/AP hide caption

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Evan Vucci/AP

In a cluster of glowing human stem cells, one cell divides. The cell membrane is shown in purple, while DNA in the dividing nucleus is blue. The white fibers linking the nucleus are spindles, which aid in cell division. Allen Institute for Cell Science hide caption

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Allen Institute for Cell Science

A map from the National Weather Service shows tornado reports (red T), wind reports (blue W) and hail reports (green H) for Tuesday. More than 20 tornadoes were reported as a powerful storm system moved through the Southeast. Zoom in on the map here. National Weather Service/Google Maps/Screenshot by NPR hide caption

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National Weather Service/Google Maps/Screenshot by NPR