The Bronx Grand Concourse, a wide, tree-lined boulevard modeled after Paris’ Champs d’Elysées, recently turned 100 years old. For its birthday it got 100 stories about 100 of its most beloved trees. Living on Earth’s Ike Sriskandarajah went to the Bronx to listen to the Tree Museum.

The UN Climate Change conference in Copenhagen is just around the corner. President Obama and Chinese Premier Wen now say they plan to attend. Timothy Wirth, president of the United Nations Foundation, talks with host Steve Curwood about what to expect in the upcoming weeks, including the importance of forging a strong relationship between China and the U.S. in order to get the job done at Copenhagen.

Genetically modified microbes are the new thing in biofuels. Some university labs and high-tech startups say they’ve engineered organisms that can make fuels like ethanol and diesel with just sunlight and carbon dioxide. It’s called direct solar liquid fuel. The technology is a long way from commercial development but it’s already creating a buzz in the biofuels business.

Urban residents are urging their city governments to turn down the lights. Quincy Campbell reports how to stop streetlights from trespassing into the night sky and your bedroom.

Community activist Majora Carter has helped bring environmentalism to New York City. Carter made a name for herself by turning a dump into a park and starting one of the first green jobs programs in the country. She talks with host Steve Curwood about the social challenges of making the South Bronx sustainable.

At the age of five, J.C. High Eagle had a vision - he would someday help Americans travel to the moon. Against great odds, the Oklahoma Cherokee Indian's vision came true and J.C. High Eagle became an engineer for Apollo missions at NASA, the nation's space agency. Renowned storyteller Jay O'Callahan tells the story of J.C. High Eagle. It's part of Jay's larger work, commissioned by NASA for its 50th anniversary, called Forged in the Stars.