America.gov - Engaging the world

The latest information on the United States and COP-15, plus your chance to comment on the climate change negotiations in Copenhagen.

Twenty universities from around the U.S., Canada and Europe are participating in a global solar competition to design, build and operate energy-efficient houses.

In the smart-grid future, a digital system will save energy, produce electricity from renewable sources, repair itself and fuel a new generation of electric vehicles.

Carbon moves between plants and animals, earth, atmosphere and oceans in a continuous cycle. Understanding this cycle is a key to predicting the behavior of Earth’s climate.