Freak Waves / Invisible Astronomy / Hildebrand

Freak Waves: A report on work at the Canadian National Research Council into wave formations that can engulf oil rigs or large vessels, even when weather conditions are relatively fair. Invisible Astronomy: Host David Suzuki visits the Algonquin Park Observatory and the Arecibo Observatory in Puerto Rico as he reports on the use of radio astronomy and the search for extraterrestrial intelligent life. Hildebrand: A visit with chemist and educator Joel Hildebrand of the University of California.[