Luke is a leading voice in the state for clean air, clean water, clean energy, and open space. Luke has led successful campaigns to win permanent protection for the Christmas Mountains of Big Bend; to compel Exxon, Shell, and Chevron Phillips to cut air pollution at three Texas refineries and chemical plants; and boost funding for water conservation and state parks. The San Antonio Current has called Luke “long one of the most energetic and dedicated defenders of environmental issues in the state.” He has been named one of the “Top Lobbyists for Causes” by Capitol Inside, received the President’s Award from the Texas Recreation and Parks Society for his work to protect Texas parks, and was chosen for the inaugural class of “Next Generation Fellows” by the Robert S. Strauss Center for International Security and Law at UT Austin.