On April 14, get ready participate in one of the thousands of events across the country that are planned with Step It Up 2007 -- a grassroots movement to convince Congress to reduce carbon emissions.

This week the U.S. Supreme Court ruled that the federal government has an obligation to regulate car emissions and air pollution from coal-burning power plants and factories.

The Supreme Court heard its first global warming case yesterday and they'll look at the scientific data to behind the crisis. Meanwhile, we see new data about our warming planet every day.

Could the deep, blue sea hold the key to our carbon emissions problem?

Scientists are investigating whether greenhouse gases can be permanently trapped in cold storage on the ocean floor.

Another day, another neurosis about eating right and living a good life. Su Avasthi on why it ain't easy being green.

Another day, another neurosis about eating right and living a good life. Su Avasthi on why it ain't easy being green.