popSiren: Hula hoops, physics, and 'ReadyMade' magazine's Jen Trolio Video

Video description: Sarah shows you how to master new skills on the fly, Dr. Kiki explains the physics behind hula hooping, Moujan melts an old toothbrush into a fabulous toothbrush holder, and Heather explains the merits of something under-appreciated that lives in the sea.

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