Public education and positive youth development will be the hot topics as Michael Holthouse, founder of Holthouse Foundation for Kids and nonprofit Prepared 4 Life, speaks at 3 p.m. today on “Growing Up in America,” Children at Risk’s weekly radio show on 90.1 KPFT Pacifica in Houston. Holthouse will join Children at Risk’s Mandi Sheridan Kimball and guest co-host Scott Van Beck with Houston’s A+ Challenge.