 This is Coast to Coast AM with George Norrie. And we're with space historian Robert Zimmerman. His website is BehindTheBlack.com, linked up at CoastToCoastAM.com. We'll take your calls with him when we come back. Did you know your dog foods could be harmful? Dr. Marty says there's a one major red flag here. Cooked dog food, like kibble or canned food.