(Angela Weiss/AFP/Getty)
Some of the most positive changes have come with downsides that are straining the city.
By Hannah Natanson and Danielle Paquette
(Matt McClain/The Washington Post)
The changes to our urban design, architecture and everyday life are so profound we can hardly see them.
Guidance from Dr. Leana Wen, a Post Opinions columnist, on how to navigate medical and public health challenges.