Low-income Americans often rely on public transportation and are disproportionately hurt when service is cut back and fares are raised.
Ordinances that let bicyclists sue road-enraged drivers are catching on in some California cities and Washington, D.C.
Violence in Oakland inspires soul searching and a grassroots effort to build a sustainable future for all residents. Can newcomers help bridge the class divide?
Sunday's climate rally was the biggest yet. As the movement keeps growing, can it hold onto both its moderate marchers and its risk-taking radicals?
Depending on who you ask, there were 30,000, 40,000, even 50,000 people in Washington, D.C. Sunday to lobby for political action on climate change.
In New York, kiosks offer books outside Sandy-shuttered libraries, and in Oakland, a people's library is surviving on the sidewalk.
One part of the Bay Area is getting rid of oysters for the sake of the environment, while another is eagerly reintroducing them.
French researchers say diets heavy on fruits and vegetables might not be so great for the planet, but they make some strange assumptions.
The Marine Stewardship Council is stamping its label on lots of seafood products, but many critics aren't convinced it represents sustainability.