The "adventure playground" trend hits New York City.
State lawmakers passed an ambitious climate bill, but it might be undermined.
Berkeley residents are drinking about two fewer sugary drinks per week since the tax started, according to a new study.
A little park safety awareness wouldn't kill you.
The folks with trees, mountains, and bison on their badges have decided it’s high time to serve city dwellers.
Jamaica Bay is an imperiled swamp nestled next to the biggest city in America -- and it has a lot to teach us.
11 cities are using this nifty sonar device to measure the distance between bikes and cars.
A set of canals, levees, and reservoirs that could have staunched Louisiana's floods had been deemed impractical.
High-school reporters found lots of New Yorkers breaking a law that’s intended to curb air pollution.