The military’s M.R.E.--the Meal Ready to Eat, or those air-sealed packages full of gummy pastes and freeze-dried dreck that soldiers carry into the field--is getting a much-needed upgrade. But it’s not in the form of better tasting dehydrated foods or better freeze-drying technology. Rather, the U.S. Army has developed the world’s most cutting edge sandwich, the BBC reports, one that can be served fresh after sitting on the shelf for a full two years.
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.