We have harnessed water, wind, solar, thermal and nuclear power. What has been done to harness the energy from lightning strikes, tidal change? Except for a few, not much has been done to harness a source of unimaginable power.
Addendum: If we don't find new renewable energy sources, the tree huggers will have to resort to burning the trees for energy. We need energy and those who have the environment as their cause will eventually have to drop their ideals in favor of survival.
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