(CNSNews.com) - First Lady Michelle Obama is promoting walking to school as part of her anti-obesity campaign. In remarks to mayors gathered at the White House last week, the first lady singled out Knox County, Tenn., which – inspired by Mrs. Obama’s “Let’s Move!” campaign -- has created a bike-share program and something called a “walking school bus.” “I've heard more and more of this kind of walking school bus happening all over the country -- so that kids can get exercise on the way to school, kind of like we did when we were growing up," she said. A...