Every year for the past five years Bill and Melinda Gates have written an open letter talking about their foundation, and the work that it’s doing. In this year’s letter the Gates spoke at great length about the improvements that will be coming over the next 15 years for people in developing countries. By 2030 the Gates see the eradication of polio, halving the number of child deaths before age five, access to financial services currently unavailable for 2 billion people, and a drop in the number of new HIV cases. “The lives of people in poor countries will improve faster in the next 15 years than at any other time in history,” the letter states. We think it will too.