Dr. David L. Evans is the executive director of the National Science Teachers Association (NSTA). Before joining the association staff in February 2013, Dr. Evans served as the Director of the Center for Sustainability: Earth, Energy, and Climate at Noblis, Inc., a not-for-profit provider of science-related, strategic, and technology consulting services to government and commercial entities. Prior to joining Noblis in 2007, Dr. Evans served as the Under Secretary for Science at the Smithsonian Institution in Washington, D.C., where he directed research and education activities and oversaw strategic planning, outreach, fundraising, and hiring for the national museum and several research institutions, including the National Science Resources Center, the Natural History Museum, the Air and Space Museum, the National Zoo, and the Environmental Research Center. While at the National Oceanic & Atmospheric Administration (NOAA) from 1993 to 2002, Dr. Evans served the organization in several different capacities. As the Assistant Administrator for Oceanic & Atmospheric Research (OAR), Dr. Evans directed OAR's scientific research and development programs in coastal, ocean, marine, atmospheric, climate and space and geophysical sciences, through research laboratories and a network of university-based programs across the country. In 2001, Dr. Evans led the White House Global Climate Change Initiative, coordinating related activities of some 12 federal agencies. Before coming to Washington, DC, Dr. Evans was a tenured professor of oceanography at the University of Rhode Island. For three years he taught high school mathematics in Pennsylvania. Dr. Evans holds a Ph.D. in oceanography from the University of Rhode Island and a bachelor's degree in mathematics from the University of Pennsylvania.