Kids mark Pi Day with pie fight

March 14 is Pi Day, and to commemorate the mathematical constant, the Children's Museum of Houston closed off a side street in the Museum District and invited 100 children and adults to participate in a shaving cream fight. The battle started precisely at 1:59pm, cleverly paying homage to pi by using its first few numbers, 3.14159. <span class=meta>(KTRK Photo/ Mena El-Sharkawi)</span>
March 15, 2013 4:18:46 AM PDT