First lady Michelle Obama points out some student athletes as she announces the “Let's Move” campaign to combat the rapidly growing problem of childhood obesity, Tuesday in the State Dining Room of the White House in Washington. The nationwide campaign calls for initiatives to improve parents knowledge of nutrition and exercise, improving the quality of food in schools, making healthy foods more affordable and accessible for families and focusing more on physical education. With one in three kids overweight, schools as well as government-led programs are seeking to improve the health of children.