Researchers found that two of the Tetons' biggest glaciers have lost more than 20 percent of their surface area since the late 1960s.
Environmental groups worry that the practice of reflagging US commercial ships that may have PCBs so they can be scrapped abroad is beginning again.
A survey of more than 100 ponds found that the number of frogs has declined in Australia's second-largest city.
Melting ice caps are exposing more of the Arctic Ocean than ever before. The US moves to halt fishing in the newly ice-free zones even before a fishing industry blossoms there.
Scientists found that eight species had become between 2 to 4 percent smaller over the past century.
Warmer temperatures have allowed the Duke of Burgundy butterfly to flourish this year.
Energy rallies organized by coal and oil industry.
'Senior' from the reality TV show 'American Chopper' has invented a zero-emission hog. It's 'Easy Rider' minus the ear-splitting roar (and greenhouse gases).
A new study finds that hydrofluorocarbons could become a significant factor in future warming.
Tuvalu, a nation of nine islands, is taking steps to completely rely on renewable energy by 2020.
The US has the lowest rate of intercity rail usage, but Congress is taking steps to change this.