Friend sees awesome photo mentioned on blog, friend sends link to photo to me, photo is judged to indeed be awesome, photo is placed on work computer's desktop, and photo is mentioned on another blog by me. Ah, the beauty of the system. Anyway, check it out—a 777's eye-popping wake turbelence rendered in the clouds above foggy London town, taken by Steve Morris. Check it out. —John Mahoney
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.