Related Program: This Green Earth This Green Earth - June 12, 2018 By Chris Cherniak & Nell Larson • Jun 12, 2018 Related Program: This Green Earth TweetShareGoogle+Email Dr. Curt Stager is a professor of Natural Sciences at Paul Smith's College in the Adirondacks region of New York . He focuses on lake biology and has a new book titled, The Secret World of Lakes. Listen Listening... / 23:10 Tags: Dr. Curt StagerThis Green EarthTweetShareGoogle+EmailView the discussion thread.