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Smog fills Utah's Salt Lake Valley in January 2017. Winter weather in the area often traps air pollution that is bad for public health. George Frey/Getty Images hide caption

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George Frey/Getty Images

EPA Science Panel Considering Guidelines That Upend Basic Air Pollution Science

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The sea squirt Ascidia sydneiensis, a tubelike animal that squirts water out of its body when alarmed, is one of 48 additional nonnative marine species in the Galapagos Islands documented in a newly published study. Previously, researchers knew of only five. Courtesy of Jim Carlton hide caption

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Courtesy of Jim Carlton

Dozens Of Nonnative Marine Species Have Invaded The Galapagos Islands

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Federal Aviation Administration Acting Administrator Daniel Elwell (left), National Transportation Safety Board Chairman Robert Sumwalt, and Department of Transportation Inspector General Calvin Scovel, appear before a Senate Transportation subcommittee on commercial airline safety on Wednesday to discuss two recent Boeing 737 Max crashes. Alex Brandon/AP hide caption

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Alex Brandon/AP

FAA Head Defends Agency Actions Following Recent Air Disasters

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House Speaker Nancy Pelosi, D-Calif., walks to a Democratic Caucus meeting at the Capitol on Tuesday. She told lawmakers to "stay focused on our purpose for the people" with the end of the special counsel's Russia investigation. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP

After Mueller Report Memo, Democrats Turn To Health Care — For Now

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A candlelight vigil was held last year for the victims of the shooting at Marjory Stoneman Douglas High School in Parkland, Fla. Seventeen students died in one of the worst school shootings in U.S. history. Wilfredo Lee/AP hide caption

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Wilfredo Lee/AP

Suicides In Parkland Leave Community In Shock

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Copies of a letter from Attorney General William Barr advising Congress that Special Counsel Robert Mueller has concluded his investigation. Pablo Martinez Monsivais/AP hide caption

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Pablo Martinez Monsivais/AP

Robert Mueller Submits Report On Russia Investigation To Attorney General

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Senior adviser to the President Jared Kushner used private email and a messaging app to conduct official business, the House oversight committee says. Kushner's lawyer has pushed back on some of the committee's assertions. Win McNamee/Getty Images hide caption

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Win McNamee/Getty Images

Kushner Used Private Email To Conduct Official Business, House Committee Says

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Boeing 737 Max jets are grounded at Sky Harbor International Airport in Phoenix on March 14. Matt York/AP hide caption

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Matt York/AP

Boeing Brings 100 Years Of History To Its Fight To Restore Its Reputation

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At the University of Pennsylvania in Philadelphia on Friday, Nayab Khan, 22, cries at a vigil to mourn for the victims of the Christchurch mosque attacks in New Zealand. Mark Makela/Reuters hide caption

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Mark Makela/Reuters

Coping With The Persistent Trauma Of Anti-Muslim Rhetoric And Violence

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Bell's concept model of a vertical-takeoff-and-landing air taxi vehicle, as unveiled in January at CES (the Consumer Electronics Show) in Las Vegas. Bell hide caption

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Bell

Flying Taxis. Seriously?

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María de Jesús Caro Villa, 82, and Albano Villa, 83, are being cared for by their granddaughter, Nitzia Chama. The AARP says 1 in 4 family caregivers is a millennial. Nitzia Chama for NPR hide caption

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Nitzia Chama for NPR

As Parents And Grandparents Age, More And More Millennials Are Family Caregivers

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Jose Eduardo hugs his 15-year-old daughter Yaimy, 10 months after they were separated at the U.S. border. John Burnett/NPR hide caption

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John Burnett/NPR

A Honduran Father Is Reunited With His Daughter, 10 Months After Being Separated

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There can be as many as 35 different inactive ingredients inside a medicine. Monty Rakusen/Getty Images hide caption

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Monty Rakusen/Getty Images

Overlooked Ingredients In Medicines Can Sometimes Trigger Side Effects

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The Trump administration aims to boost competition among hospitals and cut costs by letting consumers see how widely prices can vary for the same medical or surgical procedure. But health economists say patients typically have little choice in choosing their hospital. teekid/Getty Images hide caption

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teekid/Getty Images

U.S. Hospitals And Insurers Might Be Forced To Reveal The True Prices They Negotiate

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The debate over voting is a heated one, often tainted by misleading and exaggerated rhetoric. Simone Golob/Getty Images hide caption

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Simone Golob/Getty Images

Exaggerating Voting Issues May Juice A Base — But It Also 'Undermines Our Democracy'

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