I made this post almost 3 years ago: https://www.physicsforums.com/showthread.php?t=175198 Last January, this discover was made: http://spectrum.ieee.org/nanoclast/...essity-is-the-mother-of-invention-in-nanotech Cooling without any expenditure of energy, violation of 2nd Law of thermodynamics, sounds familiar? Glad these guys did it!! I could not do it myself, well I tried, just so many factors keep coming against my way. I am situated in one of poorest nations in Asia, and it isn't the best place for such radical discoveries, and potentially expensive ventures. A lot has changed since my post though. I have finally come up with a way to do it, long before this official discovery was made, just differently than how they did it in the 2nd post. But similar in principle due to the 'microscopic level' the interactions must be done. The high performance requirements is what keeps my from prototyping it. I just don't have the capability at the moment. It's a different machine however, not just for cooling but also for providing motive power(transport vehicles, etc) as well as source of energy, using ambient heat as fuel. If this works, not only global warming is solved, but also ends our energy dependence on fossil fuels, nuclear, hydroelectric... I can't say solar, since indirectly, it is solar energy, making use of ambient heat which really comes from the sun and Universe's background radiation. Good thing, ambient heat is everywhere, as long as the temp is above 0 Kelvin.