Steve Jobs and Mark Zuckerberg are examples of young entrepreneurs who founded hugely successful companies. Jobs co-founded Apple at age 16 and Zuckerberg launched Facebook while a student at Harvard. Other young entrepreneurs profiled include a 17-year-old who sold a mobile app to Yahoo for $30 million and a 14-year-old who started a fruit jam company now worth over $40 million annually. While many teenagers want to be entrepreneurs, there are few school programs to support this career path. However, young entrepreneurship is rising, with 29% of new businesses started in 2011 founded by those aged 20-34.