This week on GreenSense, Robert Colangelo welcomes three distinguished guests who have been part of major environmental undertakings. All three have unique histories and are currently involved with high-profile green projects.

Dr. Patrick Moore, co-founder of Greenpeace, started as an environmental activist in the early 70s, originally protesting hydrogen bomb tests by the US government in Alaska. He remained with the group for many years. Now he is an advocate for nuclear energy and serves as the co-chair of the Clean and Save Energy Coalition (CASEnergy), which supports increased use of nuclear energy as a clean, environmental source of electricity.

Martin Chavez is the former Mayor of Albuquerque, and now serves as the Executive Director of ICLEI (Local Governments for Sustainability). He'll explain how his efforts to green Albuquerque prepared him for his new position at ICLEI to assist cities in the development of their Climate Action Plans.

John Norquist is the former Mayor of Milwaukee, serving from 1988 until 2004. He is currently the President and CEO of the Congress for the New Urbanism. This organization works on urban planning to reverse suburban sprawl and redesign cities to make them more livable and walkable.

And, The Weekly Environmental News Update with Margery Moore of BNA providing the latest on what's happening in the US and around the world in environmental policy, action and innovation.