If you've not heard of Big Muddy Fish and Wildlife Refuge, you're not alone. Founded in 1994, TIM HALLER says it's thanks to the "duck stamp" - a license, of sorts, for hunting water fowl - that so much land has been purchased and therefore protected. Also, February is National Heart Month. Hy-Vee dietitian MICHAEL O'HALLORAN joins us with tips on how to keep your ticker ticking! (5:16) February 4, 2020