renewable energy

Environment

Bacteria Biofuel

Frances Arnold is a biochemical engineer at Cal Tech working on a part of the energy crisis. Her team is altering the genetic codes of bacteria to evolve organisms than can digest grass and excrete biofuel. She tells Kurt about "directed evolution."

Global Politics

Coney Island Sunshine

The New York subway system has one of the best environmental designs of recent years: Coney Island's Stillwell Avenue terminal is topped by a state-of-the-art photovoltaic glass roof. Kurt Andersen took the train to check it out with architect Greg Kiss.

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Environment

Geo answer

For our Geo Quiz today, we're looking for the largest -- and northernmost -- island in the Indonesian archipelago. The answer is Sumatra. Anna Sussman reports that the rush for environmentally-friendly fuel is having a devastating impact on the island's endangered orangutans.

Environment

Harnessing the wind

Anchor Marco Werman speaks with Alain Hubert, project manager for the Princess Elizabeth Station on Antarctica. It's the first polar research base powered entirely by the wind and the sun.

Global Politics

Wind energy corruption

Spain's been leading the way when it comes to manufacturing renewable energy sources. Wind turbines installed by one town in Spain have produced riches for residents -- and corruption too. The World's Gerry Hadden reports.

Environment

Canada's wartime homes go green

A million cookie-cutter houses built in the 1940s in Canada may have a future as energy-independent homes. If a million such homes were retrofitted, the energy savings could be substantial. The World brings us more on Canada's green housing experiment.

Environment

One noble scientist's take on global warming

One of the participants at this week's Nobel symposium on climate change was Yuan Tseh Lee. He's a native of Taiwan who won the Nobel Prize for Chemistry in 1986. Anchor Lisa Mullins speaks with him about the meeting that just ended in London.