Oil companies say new EPA rules on sulfur levels in gas will increase prices several cents a gallon, but higher refining costs could play out many ways.

President Obama highlights his energy policy at an event in Illinois today. What’s that policy, and will it get more attention in the second term than it did in the first?

The official news agency in China is reporting that the government will tax carbon emissions.

The European parliament is voting to halt new carbon permits in an effort to drive up the price of emissions, but will the tinkering hurt the credibility of the carbon trading system?

Justin Daugherty, a guitarist and environmentalist living in Austin, Texas says his inauguration birthday adds to his sense of social responsibility.

Take toilet paper — please. People who don't automatically buy the greenest product available have to be persuaded toilet paper that's not white is just as good as what they're used to.

Unilever says it will stop adding tiny plastic beads that act as exfoliants to its soap products by 2015.

A new set of beetles is taking North America by storm, and this time the casualty is the lumber industry. What does this mean for home building and other lumber needs in the U.S.?

A federal judge said the Tennessee Valley Authority is liable for the big sludge spill at its power plant near Knoxville a few years back. Millions of tons of coal ash spilled out of a man-made lake and blanketed nearby rivers and land.

The computer giant withdrawal from EPEAT may turn into a profit.