Using earth energy. Tap into the heat eight foot underground. It costs $1 a day to heat a greenhouse to 28 degrees centigrade in the cold of winter. Far cheaper than paying for oil, gas or electricity.
In case you’ve never been there, let me
tell you: Nebraska is cold in the winter.
What if there were a greenhouse system
that could handle the cold for $1 a day.
Apparently, there is…
From our friends at nextworldtv.com