A shortage of English teachers has compelled South Korea to take the next logical step and plan a $45 million rollout of robotic teaching assistants. That official go-ahead follows several months of robot trials, io9 says based on Korean news reports. But the idea of replacing old fashioned human English teachers has already stirred much debate.
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.