Without Roy Spencer`s "back radiation" there is no positive feed back from a cooler body to a hotter one and any "global warming" can`t come from 380 ppm CO2. Since Roy has been debunked by a whole lot of engineers he avoids debating this perpetual motion machine principle and the only way we could debate him since then is like Clint Eastwood debated Obama. [ame="http://www.youtube.com/watch?v=dhCfjh_IlzI"]Dirty Harry debates Obama chair (anonymous style) - YouTube[/ame] But I`m not a Hollywood movie actor so instead I`ll let Roy speak here through his quotes: Yes, Virginia, Cooler Objects Can Make Warmer Objects Even Warmer Still « Roy Spencer, Ph. D. If Clint Eastwood were an engineer he would have said: To which Roy replied: and adds: Even Clint Eastwood would have noticed that a insulating blanket is not the same as what Roy is trying to pass off as "back radiation" and would have grilled Roy on that point: And if Clint Eastwood would be an engineer he would have pointed out a few facts to Roy Spencer: Roy replied: Clint Eastwood would have said: And if there were a few house wives and and a few cooks in the audience who have a solar oven / fridge they would have bust out laughing...: Let me google that for you Lets pick a couple .: How to Make and Use the Solar Funnel Cooker Or this one : http://littleshop.physics.colostate.edu/tenthings/SpaceFridge.pdf Oh what was that You said before Roy?..: I’ve discussed this issue with someone I work with, a physicist, and he pointed out there are photonic IR detectors. I see from internet searches that these can operate at room temperature. If such photonic detectors can measure IR photons coming from a cold surface, would you consider that as evidence that IR radiation is indeed emitted by a colder object in the direction of a warmer object? yes-virginia-cooler-objects-can-make-warmer-objects-even-warmer-still ? Even your oldest daughter, a realtor who has an aversion to things scientific, got the right answer when You used this example on her ? So lets vote on Roy Spencer`s "back radiation" where a cold object can make a warm object even warmer global warming back radiation miracle photons that defy all laws of thermodynamics. Would You A.) rather sit in the desert sun under a "back radiation" sun umbrella or B.) do You prefer to "cool off" out in the open with Roy Spencer ? And before anybody comes in here and switches the subject ( again) to the "melting glaciers" trying to prove that this crap is science..I don`t care which..don`t shoot your mouth off like Roy and his stupid "Yes Virginina" thought(less) experiment...and before You accuse us that our fossil CO2 can be linked to a "record low" glacier thickness on Greenland without first explaining where all the heat came from that evaporated all that water somewhere else so it could fall as snow and freeze to mile thick glaciers in Greenland . If You do I`ll shoot You like fish in a barrel or worse. Good night, I`m done and the "Yes Virginia" skeptic fridge I tried out...using a 6 inch bushnell reflector telescope wrapped with fiberglass insulation, pointed out the closed (!!) bedroom window froze a styro-foam cup full of water solid !