Alaskan Judy Foster had long been asking her husband, Fred Keller, to restore her late father’s old fishing truck, but he always refused. “All that work, and you’d still only have a ’76 Mazda pickup,” he said. In August 2009, he came to her with a different idea: Let’s transform it into a large-scale, highway-legal replica of a Radio Flyer wagon. She gave the concept the nod.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.