Dump a whole bottle of detergent (up to 54 ounces) into the GE Profile dishwasher's reservoir and relax for the next few months. The appliance automatically releases just the right amount during the pre-wash and wash stages by examining cycle selection, soil level, and water hardness. An LED warns you when it's low. Also, the washer's exhaust vent opens only during the dry cycle, dropping the noise level to a whisperlike 47 decibels. $1,080
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.