In a new report, the CDC says U.S. doctors are prescribing fewer opioids than they were in 2010, but that overall rates remain high. Donald Gruener/iStockphoto/Getty Images hide caption

An undated image shows recording equipment at QVC Studio Park in Pennsylvania. The TV shopping network has announced plans to merge with its rival, HSN Inc. Courtesy of QVC hide caption

Crew members on one of the simulated Mars missions this spring included Pitchayapa Jingjit (from left), Becky Parker, Elijah Espinoza and Esteban Ramirez. Community college students and teachers in real life, the team members spent a week in the Utah desert, partly to experience the isolation and challenges of a real trip to Mars. Rae Ellen Bichell/NPR hide caption

A shelter sign is displayed at the entrance to a subway station in Seoul on Wednesday, a day after North Korea tested an intercontinental ballistic missile. Subway stations are designated as shelters in case of aerial bombardment, part of the city's response to the threat posed by North Korea. But many Seoul residents take the threat in stride. Ed Jones/AFP/Getty Images hide caption

Outgoing ethics director Walter Shaub said in January that President Trump's plan to reduce conflicts of interest "doesn't meet the standards ... that every president in the past four decades has met." Claire Harbage/NPR hide caption

Sen. Ted Cruz at an event for the Federalist Society in November 2016. Cliff Owen/AP hide caption

Lawmakers had to be called back to the Illinois State Capitol in Springfield to override the governor's veto and pass a budget deal with bipartisan support. Raymond Boyd/Getty Images hide caption