What’s done can’t be undone, but just like we can play music backwards; we can sometimes reverse the negative effects of our actions. The re-do will never be as good as the original, and may be about as palatable as a song played in reverse, but it is a good start to righting wrongs. Ironically, one area we need to work on is global cooling. There are various ways this can be done. We use electricity to cool buildings, building up more heat in the process. We can increase cooling naturally by positioning building to face sea or lake breezes, and building walls parallel, so that the air from the breeze is pushed into a desired direction for maximum effect. Spreading rooms across a single story also encourages heat loss, because there is a larger surface emitting excess heat at any one time. Traditional methods of building can also be useful. Many indigenous huts, made of mud, stone, or baked brick are very cool inside, so making brick out of earth rather than concrete not only keeps out heat but also saves the energy that would be used to mix the said concrete. Incorporating water serves the same purpose, whether it is through aquariums or liquid filled piping in the walls. A system of recycling used water can thus double as an indoor coolant.
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