For the first time, renewable sources of energy such as wind and solar are generating more power than coal in the U.S. Just a few years ago, the school district of Batesville, Ark. -- a rural town of about 10,000 people -- was having trouble retaining and hiring its teaching staff. Although the town prided itself on putting students first, it ranked next-to-last in the entire state in compensating its teachers. Until two years ago, the school administration filled an unused field behind the school with hundreds of solar panels, in addition to adding a canopy of panels across the front of the high school, totaling nearly 1,500 panels. The school now generates its own electricity and sells excess power back to the grid. The school district has saved more than $600,000 in utility costs, enabling it to give every teacher bonuses of up to $15,000 two years in a row. Over the last decade, the price of solar has dropped 89%, and 7,332 schools across the U.S. have implemented solar power, up 81% in just five years.