Fusion power has big potential for America's energy future, but high costs are a major challenge. https://www.rawpixel.com/image/3322330/free-photo-image-laboratory-innovation-fusion-arpa-e-energy-summitFree Image from public domain licenseThe Energy Department’s ARPA-E Energy Innovation Summit gathers innovators, academia, government and industry to… https://www.rawpixel.com/image/3325633/free-photo-image-lecture-accessory-apparelFree Image from public domain license