Researchers at Queen's University Belfast are studying a new kind of wireless network that might someday help alleviate the crush of mobile internet traffic in dense cities. How does it work? By making you--and me, and all of us--into cellphone towers.
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.