Professor Mark Kleiman of the Department of Public Policy shares expert commentary on the subject of narcotics on the series, "Taboo," premiering this month on the National Geographic channel.

"No society's ever had as many recreational drugs, or mind-altering drugs, available to it, as we now have available to us." comments Kleiman.

The program airs on Sunday, February 7 at 3 p.m., check for additional air dates.