Illustration of figure plugging in to giant outlet (State Dept./Doug Thompson)

What is the power grid and how does it work?

Did you know you are looking at part of the power grid every time you see power transmission lines? How does renewable energy become part of the grid?

Simple facts of climate change

Climate scientists are in nearly unanimous agreement that the Earth’s atmosphere is getting warmer and will affect the way people around the world live.

Save our oceans (and score a free poster)

The ocean ecosystem regulates climate, produces oxygen, and feeds about three billion people. But our oceans may not be able to provide these benefits much longer.
Aircraft dropping red substance on fire (© Noah Berger/AP Images)

U.S. sends firefighters to Australia to help fight blazes

The United States is sending firefighters and wildfire specialists to Australia to help fight the fires that have already consumed millions of hectares.

Cities as policy labs: New York retools

Find out what makes the largest city in the United States one of the world's greenest, most environmentally friendly cities.
Man using smartphones to stop illegal logging (Courtesy of Rainforest Connection)

Mobile phones can surf the Internet, take photos, play music and…protect...

Money doesn’t grow on trees, but timber thievery is thriving. Every year, swaths of forest the size of Panama are cut down. Some of...
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Celebrities join in the fight against climate change [video]

"One day we will wake up to find we have literally changed the face of the Earth," actor Morgan Freeman says in this video,...

Who needs gasoline? Hydrogen fuel-cell buses are the way to go...

Buses can contribute to urban smog, but thanks to new hydrogen fuel-cell technology they also might be the perfect vehicles to reduce air pollution.

Once smog-shrouded, LA has improved its air quality

Over the past few decades, Los Angeles has learned techniques to improve air quality that could benefit other major cities around the world.