April 22, 2010 1:02 pm Around Town with Justin Pizzi Justin Pizzi visits the National Constitution Center as they show children what Earth Day is all about. US & World Videos 1:56 Pro-Palestinian encampment at Penn enters ninth day 8:59 Raise a julep to the Kentucky Derby: The Lineup 0:32 Five people arrested in 2006 Philadelphia cold case 0:19 Body of missing kayaker found in the Schuylkill River 2:00 Police officer placed on administrative duty after killing dog that attacked a man