USA, Chicago, IL, December 12, 2009. Kids concentrate on Paul Lopez as he explains how to visualize balls in the air. Students in the "At-Risk After School Program" at Maria Saucedo Scholastic Academy receive training in basic physics principles through an innovative new program called "Circus Galactica" put on by Pros Arts, a non-profit organization founded in 1978 by professional artists dedicated to the Pilsen/Little Village communities. In a residency that directly integrates science and art, veteran circus performers Douglas Grew and Paul Lopez bring the importance of "balance, focus and presentation" into hands-on lessons about gravity, inertia, and the dynamics of objects in motion. Photo for Hoy by Jay Dunn.