david 3Dr. David L. Evans is the Executive Director of the National Science Teachers Association (NSTA), the world’s largest professional organization representing science educators. Prior to NSTA, Evans held various science-related positions – Director of the Center for Sustainability at Noblis; Smithsonian Institution’s Under Secretary for Science; and Assistant Administrator for Oceanic & Atmospheric Research, National Oceanic & Atmospheric Administration. Evans also led the White House Global Climate Change Initiative, coordinating activities of 12 federal agencies. Evans was an oceanography professor at the University of Rhode Island and was a teacher in Pennsylvania.