There’s nothing like a flash mob to get you into the spirit of the holidays. In this fabulous video, unsuspecting shoppers are treated to an expert rendition of Handel’s "Hallelujah Chorus."

Plenary speaker Barbara Fiese, PhD talks about the alarming rise of child obesity.  Listen to this recording to hear about some surprising evidence as to its etiology.  She then recommends some evidence-based ways in which public policy and individual families can make changes to reverse the trend.