(Maxine Wallace/The Washington Post)
The former official avoided all questions at a hearing after alleging Sen. Rand Paul was seeking to wrongly trap him with perjury charges.
By Dan Diamond and Anna Liss-Roy
Carolyn Hax and Haben Kelati
Daniel Wolfe and Frank Hulley-Jones
(The Washington Post)
Stanford University scientists’ new model estimates exposure to the pollutant nitrogen dioxide based on home size, how often the stove is used and where people live.
Guidance from Dr. Leana Wen, a Post Opinions columnist, on how to navigate medical and public health challenges.