USC prof Clifford V. Johnson enjoys the annual, free Jet Propulsion Lab open house and blogs about this weekend's event at Asymptotia: "One thing that’s always amusing to me about this open day is the regular sighting of academic-looking/sounding parent or parents with their child or children. There’s a sort of charming earnestness in the eyes of the parent(s), with an evident keenness to make this event really count in the influence on the interests of their young charges." He posted some video he shot of the day.