outside looking for more corn cobs | It's true that the lighter colored buildings don't heat up as much, which is a good thing to know down south for keeping the A/C bill down.
But, up in the northern states (provinces), the light colored buildings won't heat up as much, costing more to heat in the winter.
FYI, a dark colored building will also cool off faster. Similar to radient heating, except it's called Black Body Radiation.
The dark asphalt also helps the snow melt off the roads in the snow areas.
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Next best thing for Global warming - paint your roof and asphalt road white
