Increasing green space in cities could have prevented at least 34,000 deaths from all causes over two decades, a new study shows.

A new book considers urban wildlife and their place in American cities. "Cities bring together diverse creatures in new ways," says the author.

Shuttering schools increased gentrification, the study finds—but only in predominantly Black neighborhoods.

"We know it's not just different demographics alone. It's the structural, economic, and social factors that define those places..."

City environments are changing the way plants evolve, a new study of white clover, one of the few organisms present in almost every city on Earth, shows.

Housing discrimination practices dating from the 1930s, called redlining, still drive air pollution disparities in hundreds of American cities today.

"Humans do not like looking at boxes," physicist Richard Taylor says. "We need to reclaim our urban environment and put nature back into it."

Shared e-scooters and e-bikes are supposedly climate friendly, but a new study suggests they may emit more CO2 emissions than the alternatives they replace.

Strategic groves of certain "super trees" can make cities more livable, say researchers. Here are the 17 best species to plant.

Despite closure threats, ERs at rural hospitals save lives at similar rates to their urban counterparts, new research shows.