How can we gather the 12°C cold temperature of the Earth what we wish so much during the summer. We have to come out here with a new term: that is the geocollector.
A geocollector can be used by
air or liquid, it can be horizontal or vertical, and also it can be
used by natural or man-made lake or river.
 
One thing is for sure, properly measured and set the cold starts moving upwards.
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