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To mark the 40th anniversary of the Internet, DARPA has announced the DARPA Network Challenge, a competition that will explore the roles the Internet and social networking play in the timely communication, wide-area team-building, and urgent mobilization required to solve broad-scope, time-critical problems. The challenge is to be the first to submit the locations of 10 moored, 8-foot, red, weather balloons at 10 fixed locations in the continental United States. The balloons will be in readily accessible locations and visible from nearby roads.

The video discusses the experiment a teacher conducted in her classroom, in which she divided her 3rd-grade class into groups with blue eyes and brown eyes and told them the blue-eyed groups were “the better people in this room,” later changing the rules and saying that brown-eyed kids are better (she started this experiment the day after Martin Luther King, Jr., was shot). It’s an interesting look at stereotyping and social psychology, particularly how quickly groups will change their behavior if they are told they have a superior or inferior characteristic.