Approximately 500 people gather to watch the University of Houston 2015-2016 Energy Symposium Series at the Student Center South, 4455 University Drive. Tonight panelists discuss the topic quot;Arctic Drilling: Untapped Opportunity or Risky Business?quot;br/ID: Bob Reiss responds to comments by Peter Van Tuyn on right. On far left is Richard Haut.br/Thursday September 24, 2015 (Craig H. Hartley/For the Chronicle)