Business Insiderflipped into TechBill Gates' letter to high schoolers: We need an 'energy miracle' to stop climate changeverified_publisherBusiness Insider - Jillian D'OnfroBill Gates has published his annual letter on behalf of the Bill and Melinda Gates Foundation, and for the first time, he directs it specifically at high school students. While last year's letter focused on eradicating disease, this year's note takes on the topic of energy. He directs it at young …