The revolution that made music more marketable, more personal and easier to pirate began ... at the dawn of the nineteenth-century. At TEDxSMU, José Bowen outlines how new printing technology and an improved piano gave rise to the first music industry and influenced a generation of composers.
(Filmed at TEDxSMU.)
Just how small are atoms? Really, really, really small. This fast-paced animation from TED-Ed uses metaphors (imagine a blueberry the size of a football stadium!) to give a visceral sense of just how small atoms are. Lesson by Jon Bergmann, animation by Cognitive Media.