For more information on our TEDxYouth@Berlin events, please visit our website www.tedxyouthberlin.de. TEDxYouth is an event for middle and high school students, with live speakers, handson activities and great conversations. Scientists, designers, technologists, explorers, artists, performers (and more!) share short talks on what they do best, serving both as a source of knowledge and inspiration for youth around the globe. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx