Australia's Climate Commission says global warming caused its harsh summer of record-breaking heat, floods, and bushfires.
Agricultural poisons are reducing the quality and quantity of sperm in men all over the globe, especially farm workers, according to a new study.
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.
We've devised the world's shortest survey to find out what kind of actions our readers are taking. You know you want to.