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
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.
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
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.
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
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.
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.