Labels on bottled water make it difficult for consumers to discern what is in their water: has it been purified or tested? A Congressional hearing and two new reports illustrate the lack of information that consumers have about what’s in a bottle of water. Host Jeff Young talks with Jane Houlihan, the Senior Vice President for research at the Environmental Working Group about the consumer’s right to know what’s in bottled water. We also hear from Tom Lauria of the International Bottled Water Association who says that the labels provide adequate information.

The principles of smart growth and green building have come together in the first national standard for green neighborhood design. Sophie Lambert of the U.S. Green Building Council tells host Steve Curwood that the LEED for neighborhood development rating system has the potential to change how developers and local governments can work together to create healthy and environmentally-sound neighborhoods.

All of the news, video and mail you access online has to live somewhere. These houses of information need large amounts of energy to run. Chris Page, Director of Climate and Energy Strategy at Yahoo!, gives host Jeff Young a tour of one such data center in Silicone Valley. She also talks about Yahoo’s plan for cutting their CO2 emissions in half.

The Obama administration's debut at the World Economic Summit ends with little progress made toward a global climate change treaty expected by December in Copenhagen. The G8 agreed for the first time that a global temperature increase beyond 2 degrees Celsius would be dangerous, but didn't set goals that would encourage developing countries, like China and India, to reduce their greenhouse gas emissions. Host Steve Curwood talks with climate diplomacy expert Jennifer Morgan about how the world can work together to get back on the road to Copenhagen.

President Barack Obama wants to host a global summit on nuclear security next year. He's called nuclear terrorism the gravest threat the world faces, and political scientist Graham Allison agrees. Graham Allison, author of the book "Nuclear Terrorism" tells host Steve Curwood that we're more likely than not to experience a nuclear or biological weapons attack in the next five years-- a preventable tragedy that would change the world forever

David Gottfried believes that green is beautiful and he has renovated his house to prove it. His 1915 Craftsman home in Berkeley, California is so energy efficient that it has received the highest U.S. building rating for a reconstructed building - a platinum LEED certification. Reporter Lonny Shavelson went to visit this environmental Eden to see if there are eco-lessons for the average homeowner.