Although it seems clear the United States will not change its current position and sign onto the Kyoto treaty, some U.S. companies are starting to push for mandatory federal regulations on greenhouse…

Loss of forests is a major contributor to greenhouse-gas emissions. Plans to devise a policy tool for using trees for carbon dioxide sequestration are now under way.

Greenhouse gas trading is now a multibillion-dollar international business and is expected to continue to grow, despite uncertainty about a post-2012 international climate regime.

A year into the civil war in Sudan, more than eight million people have been displaced, exacerbating an already devastating humanitarian crisis.