Know how you have to move your fridge away from the wall so the heat can escape? Forget about that, and about those medieval-looking lamps that warm cafeteria curly fries. 
Here's a refrigerator that puts its hot working parts on top, where your snacks can stay cozy and warm (from we make money not art). Alas, it's only an experiment for now, cooked up by Korean designer Hae-jin Kim.
But there are ongoing efforts to make more energy-efficient fridges, which in the States still use HFC greenhouse gases, which will be banned by 2020. 
One hundred fifty million Greenfreeze fridges, safer for the environment, are used everywhere in the world but (did you guess?) North America. Coca-Cola and McDonald's are switching to such systems. Greenpeace, which was behind the development of Greenfreeze, is also working with NGOs on SolarChill sun-powered coolers to keep food and vaccines fresh wherever there's a sunny day. You can also get ultra-efficient models from Northern California's Sun Frost.
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