Metro will close the entire D (Purple) Line subway for 70 days beginning Saturday so crews can connect the existing line to its planned extension to West Los Angeles. The closure, which will begin at ...

Experts haven’t agreed on a number that defines a low vitamin D level. For most healthy people, the Office of Dietary Supplements states that a vitamin D serum (blood) level below 20 nanograms per ...

The Trump administration says it has arrested more than 700 people in Washington, DC as part of its mission to crack down on crime. Data given to NPR by the city's police department indicates a ...

Performance-related reforms pioneered in D.C. and Dallas have not caught on in the rest of the U.S. Eric A. Hanushek and Margaret E. Raymond are fellows at the Hoover Institution. Nobody is surprised ...