Why can't we harness VAST natural energy?
I live by the beach. In just a few thousand square metres of the sea the energy equivalent of multiple nuclear bombs is happening literally ALL the time EVERY day. We are talking about the basic and powerful energy of gravity between the Earth and the Moon. Limitless and predictable energy. Why are ideas for harnessing this VAST energy so dated (based on victorian steam engines) of using motion of waves up and down to generate heat and steam to fire old power stations?
Come to think of it, why is practical nuclear fusion now never publicly seen now as a potential energy source?