This video was produced by TEDxYouth@BerlinCosmopolitanSchool. Miki Kiryu, Berlin Cosmopolitan School, Germany. 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 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