Super pump material

Anyone on the list know how this material works?
http://gizmodo.com/a-new-super-thin-coating-could-cool-buildings-without-a-1664269232  

Am I right in that what this is doing, eg once the wavelength gets "out" it cant bounce back in. (could be totally wrong though.....)

Only problem I see though is wouldn't you need to "flip the material" in the winter? eg allow the outside environment to act as a heat pump and bring radiant heat.....into the building?

Today is an ordinary day

ha ha ha....I love it. This is a perfect tv commercial
- https://www.youtube.com/watch?v=MkccyhoS4IE





Be prepared and look like a genius....the day after is what I always say.

TIL today....

TIL today.... PNG has almost double the population of N Z.....

I know NZ is renown for long stretches of nothing but sheep and shepherds enjoying themselves.... I really didn't realize there were that many people in PNG.