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Can you explain science with seven everyday items? We're looking for some creative minds to explain how a part of the human body works, or how a process occurs in it, in two minutes or less. No fancy equipment is needed, either--a smartphone camera will do. For inspiration, take a gander at this sample video, made by our interns Isha Soni and Mollie Bloudoff-Indelicato. I love the way they used the stress ball off my desk.