JG: And lastly, here's Destin, from "Smarter Every Day," talking about the conservation of angular momentum, and, since it's YouTube, cats: (Video) Hey, it's me, Destin. Welcome back to "Smarter Every Day."
JG: Y por último, Destin,  de "Smarter Every Day" hablando de la conservación  del momento angular, y, ya en YouTube, de gatos: (Video) Soy Destin. Hola de nuevo  a "Más inteligente cada día".