@tedtoks: For the majority of recorded human history, units like the weight of a grain or the length of a hand weren’t exact and varied from place to place. Now, consistent measurements are such an integral part of our daily lives that it’s hard to appreciate what a major accomplishment for humanity they’ve been. In this TED-Ed animation, Matt Anticole traces the wild history of the metric system. Lesson by Matt Anticole, animation by Globizco. #TEDTalk #TEDEd