Oakland University Professor researches giant tortoises on Galapagos Islands

Oakland University Biological Sciences Professor Scott Tiegs researches giant tortoises on the Galapagos. He spoke live with WWJ's Greg Bowman ahead of Earth Day about lessons on sustainability from the inhabitants of the island; and what we can all do to protect our planet here in Michigan and everywhere. (Photo Credit: Peyton Olesen/GettyImages).