Objective: Describe how hydroelectric energy, geothermal energy, and geothermal heat pumps work.
Cultural shift is what we need to save our species. To assure the survival of the humans, it will require a cultural shift. (DeWitt)
Sam also explains that diesel used all over in interior of Alaska. Technology to get solar panels out is there. Villages know of it and individuals sometimes use them. There are wind generators near the coast – especially on the Aleutians. Energy sources depend on the area. (Demientieff)