Sidney Crosby's concussion brings into focus the parallels between climate change and the NHL's resistance to science.
Keystone XL would mean Canada gets the money, China (or some other foreign buyer) gets the oil and the U.S. gets the pollution.
China's largest airlines are refusing to comply with Europe's new greenhouse gas emissions regulations
To comply with a new EU emissions trading rule, Delta Airlines has added a surcharge to tickets on European flights. Will others follow?
China has ambitious goals for producing electric and hybrid vehicles, but the reality is a different story.
The European Court of Justice upheld a challenge to Europe's plan to charge airlines for their greenhouse gas emissions.
A new government initiative aims to increase energy efficiency by 20 percent in America's commercial sector by 2020
Carbon markets are primarily benefiting the largest emerging economies — but utilizing "suppressed demand" could help change that.