A passionate young scientist explores the potential of nuclear fusion as a sustainable solution to the world's future energy needs An American student in her final year of high school at the International School of Prague, Lexi is an enthusiastic young scientist. She sees nuclear fusion as a sustainable way to solve the world’s future energy needs. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at www.ted.com/tedx