Crank up the brain cells as Kari Byron shows how to make the perfect smoke ring, puts termites through their paces and hurls a watermelon from a four-story building. Also, see human projectiles fly through the air, and find out how to dry ...See moreCrank up the brain cells as Kari Byron shows how to make the perfect smoke ring, puts termites through their paces and hurls a watermelon from a four-story building. Also, see human projectiles fly through the air, and find out how to dry your cell phone. Written by
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