Book excerpt: Renewable energy is one of the fastest-growing sectors in the global economy as climate scientists and environmentalists give voice to the detrimental effects of fossil fuels. But how far have we gotten in developing efficient and sustainable energy, including solar, wind, and geothermal power, and what are the benefits of these renewable energy sources compared to fossil fuels? This text examines the issue from diverse viewpoints, allowing students to analyze key ideas in energy production through primary source evidence.