William Sanford "Bill" Nye, popularly known as Bill Nye the Science Guy, is an American science educator, television presenter, and mechanical engineer.
Erik Solheim is a Norwegian politician for the Socialist Left Party. He is currently Executive Director of the United Nations Environment Programme.
Carl Zimmer is a popular science writer and blogger who has specialized in the topics of evolution and parasites. He has authored many books and contributes science essays to publications such as The New York Times, Discover, and National Geographic.