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Your toothpaste and face scrub probably get their scrubbing power from tiny plastic beads contained within. What is the environmental impact? How can you limit your use? (2:37 min.)

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We've all got one, and some of us even use it, but throughout history the grey matter between our ears has puzzled even the brightest minds. This video describes the long history of how we discovered the structure and function of the brain and nervous system. (3:15 min.)

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Canadian astronaut Chris Hadfield shows us his "kitchen" in space and prepares a zero-g treat. Free-floating food-eating ensues, complete with a tumbling tortilla. (2:26 min.)

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The force and acceleration of a grasshopper is calculated using a high speed camera and tracker software. A velocity vs time graph is also produced. (5:15 min.)

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NBC Learn, in partnership with the United States Golf Association and Chevron, explores the science of golf. In this segment, the concept of kinematics, the use of stimpmeters and how they impact and regulate green speed are discussed. (5:48 min.)

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Very easy to understand animation describes what synthetic biology is, how it works, and future potential. (3:24 min.)

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When you eat something loaded with sugar, your taste buds, your gut and brain all take notice. This activates a reward system not unlike how our bodies process addictive substances such as alcohol or nicotine - dopamine levels spike and you crave more. (5:02 min.)

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When under anesthesia, you can’t move, form memories, or — hopefully — feel pain. And while it might just seem like you are asleep for that time, you actually aren’t. What’s going on? Steven Zheng explains what we know about the science behind the different types of anesthesia and how they exert their effects. (4:55 min.)

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This video uses LEGO blocks as an analogy to explain how synthetic biology works using “biobricks”. Also explains how commonplace synthetic biology has become and looks at the pros and cons of this development. (4:23 min.)

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What are the physical and physiological effects of sitting for long periods? (5:04 min.)

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