High levels of dangerous pollution have stabilised in China, but are rising sharply in India and Bangladesh.
Cities resisting Trump's policy could lose monies for pre-school programs, airport improvements, HIV prevention and more.
New York's standards, which bar short-term rentals, seek to root out residential property owners using their dwellings as hotels.
Pokémon Go opens a new conversation for how we are to protect our digital right to privacy.
Writing in Newsweek, Anne Hidalgo is convinced cities can provide a fresh momentum to democracy.
A new photographic series showcases global urban trends.
The former New York mayor's foundation will fund art to bring visitors, engagement, and public-private partnerships to American cities