The Berenstain Bears 50th Anniversary. Discover fun facts about the world around us in the company of the fun-loving Berenstain Bears and their friend Professor Actual Factual. Three big adventures involving the Bear: Country Almanac, a nature guide, and a trip to a science fair answer such questions as What are the seasons? Are you an animal? and How can we make energy from wind and water? Reprint of the Random House, New York, 1973, 1975, and 1977 editions.