When traffic noise disappeared from San Francisco, the city’s white-crowned sparrows took advantage of the silence, researchers found. 

After devastating outbreaks of plague and influenza, the Indian city embraced light, air and a sleek new architectural style. 

In some neighborhoods, rows of heat lamps may become a defining feature of Covid winter sidewalks. But costly heaters aren’t the only or best option for many restaurants. 

In a poll, traditional buildings soundly beat modern-looking ones, regardless of age, geography or political preference. Should that matter?

How open is too open? To help employers reduce outbreak risks after bringing workers back, new tech tools can juggle schedules and map office hot spots.