"Better Homes and Gardens" hasn't had a public figure on its cover in 48 years. With President Obama's approval rating plummeting along with the nation's employment picture, they must have figured now was the time to break with tradition and do an ultimate exposure puff piece on his wife: Better Homes and Gardens will feature First Lady Michelle Obama on the cover of its August issue - the first public figure to grace the magazine's cover in 48 years. Obama will be the focus of an article on healthful eating for children. The issue will hit newsstands July 19. Editors...