hydro power doesn't release anything. there are so many ways to generate free energy simply based on the basic movements of forces on the earth. the fact that we have a literal bajillion million gallons of water moving countless miles back and forth everyday and haven't used it for power yet shows that out society is broken.  you're telling me the people that went to the moon in the fucking 60s can't figure out a way to use natural forces (geothermal works too) for energy over 50 years later? only explanation is extreme societal stagnation which is exactly what we see ..
United States