Prostitution is legal in the country, but lawmakers have banned it to prevent the spread of the coronavirus. Sex workers say that has put them at risk, and they want to work legally again.
Lesson No. 1: Have "proper precautions in place," says historian Richard Evans. And don't "try to hush it up." Thousands died in Hamburg after the government failed to acknowledge a cholera outbreak.
Modern architecture for most of us seems to simply embody progress. Glass and steel skyscrapers, though, mean something different in Mumbai, Shangai or St.