Mchezaji "Che" Axum stands in a hoop house at the University of the District of Columbia's Muirkirk Research Farm, a resource for urban farmers in the city. Whitney Pipkin for NPR hide caption

itoggle caption Whitney Pipkin for NPR

Visitors to the Smithsonian's National Air and Space Museum wait for it to reopen after widespread power outages caused many of the buildings along the National Mall in Washington to shut down temporarily on Tuesday. Andrew Harnik/AP hide caption

itoggle caption Andrew Harnik/AP

Steve Green in the basement of the Washington Design Center, which was recently demolished as part of the construction for the Museum of the Bible. Green and his family, owners of Hobby Lobby, are building the Museum of the Bible. Andre Chung for The Washington Post/Getty Images hide caption

itoggle caption Andre Chung for The Washington Post/Getty Images

Smoke inhalation victims walk past a firefighter towards a medical aid bus Monday after passengers on the Washington, D.C., subway were injured when smoke filled the L'Enfant Plaza station during the afternoon rush hour. Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images

Thomas Nellon (left), 17, and his brother Johnson Nellon, 14, of Liberia smile at their mother in the arrivals area at John F. Kennedy International Airport in New York earlier this month. The brothers received a health screening upon arrival. The U.S. says it will step up screening measures for arrivals from Ebola-affected West African countries. Craig Ruttle/AP hide caption

itoggle caption Craig Ruttle/AP

National Geodetic Survey crew members Roy Anderson, left, and Steve Breidenbach set up survey equipment used to measure the height of the Washington Monument. National Geodetic Survey/NOAA hide caption

itoggle caption National Geodetic Survey/NOAA

Kathy Gaarde, one of the people killed in Monday's shootings at Washington's Navy Yard, in a family photo. Her husband, Douglass, says the picture depicts Gaarde "with her 94-year-old mother who she cared for until she passed away last year." Douglass Gaarde hide caption

itoggle caption Douglass Gaarde

Voters these days often reward politicians who sit at either end of the ideological spectrum while punishing those seen as compromisers. iStockphoto.com hide caption

itoggle caption iStockphoto.com
Alex Brandon/AP