A daily shot is still the most effective, if most uncomfortable, form of treatment for many people with a chronic illness. Most pills work too slowly to be of much use for, say, someone with diabetes. But one company is planning a solution: packing ultrasound tech into a pill to orally deliver drugs as efficiently as a shot.
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.