Tough policies would truly change commuter habits, but we're barely seeing them.
A new report looks at how much power cities have over climate change adaptation and CO2 emissions.
Several may surprise you.
Affordable housing isn't all that affordable without low-cost transportation. The feds are starting to recognize this.
In a few U.S. cities, bikers, pedestrians, and public transport are taking over the morning commute.
The city is rolling out a series of regulations to cut emissions over the next five years.
The influential timber industry has its own set of standards, and environmentalists aren't happy.
NASA tries to answer the question.
When temperatures go up, crime often does, too -- which means that as our summers get hotter, more cities could see the kind of violence Chicago experienced this year.