March 14 is Pi Day, which celebrates the mathematical constant measuring the ratio of a circle's circumference to its diameter (beginning with 3.14). Pi Day is celebrated internationally, and in 2009 it was decreed an official holiday by the US House of Representatives. Here are 3.14 ways to celebrate.
Studies of so-called flashbulb memories, created during moments of emotional arousal, show that our recollections, vivid as they may be, are not necessarily reliable.
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