Some New Yorkers fight back against transit austerity by giving each other free subway card swipes.
By 2040, ships could start traveling right across the North Pole, according to new scary research.
The National Women's Bicycling Forum in Washington, D.C., digs in to why ladies only make up about one-quarter of U.S. bike-riders.
Ridership has grown by 55 percent since 1997 and is now at record levels, with over 31 million travelers annually, says a new report from Brookings.
From a carbon tax to investment in air-quality upgrades, China is taking action to clean up its filthy environment.
Is $20 million too much to spend to prevent radioactive fallout in the case of a nuclear accident? Germany, Japan, and other nations say no. American companies say yes.
In addition to its climate impacts, the Keystone XL pipeline would pose threats to whooping cranes and lots of other endangered species.
Moniz, an MIT physicist and former Clinton administration official, has some controversial views on natural gas as a "bridge" fuel and other energy issues.
The brash Bostonite has been strong on climate change policy, but she's also friendly with industry.