Heinz Chair for Biodiversity Thomas Lovejoy and Deputy Secretary of the Interior David Hayes discuss the challenge of... See more
Assistant to the President for Science and Technology and White House Office of Science and Technology Policy Director... See more
Harvard environmental policy leader John Holdren explains how much is needed to control climate change , the best... See more
54% of Americans say the United States is the No. 1 military power in the world, down from 64% in 2010, with an average of 59% since 1993.
—Gallup, March, 2012