Automobile design has changed drastically over the last half century, and computers have gone from filling entire rooms to fitting neatly in our briefcases. The Boeing 737, however, has changed very little. An MIT team aims to bring aviation into the 21st century with two bold new designs for commercial airliners that could trim fuel use by up to 70 percent while increasing passenger capacity.
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.