I finally watched the Carl Sagan video. After the mention of efficient cars not being fast or quick, he qualifies support for nuclear power, safe, efficient, no waste and not weapons grade byproducts. ...and then states no suitable fission reactors exist. ....in 1990.
The first proof of concept Thorium reactor was rejected in 1973. He should have known about it.
Here's what I learned
when I looked up the date:
Quote:
A Thorium-Salt Reactor Has Fired Up for the First Time in Four Decades
The road to cleaner, meltdown-proof nuclear power has taken a big step forward. Researchers at NRG, a Dutch nuclear materials firm, have begun the first tests of nuclear fission using thorium salts since experiments ended at Oak Ridge National Laboratory in the early 1970s.
....
The team at NRG is testing several reactor designs on a small scale at first. The first experiment is on a setup called a molten-salt fast reactor, which burns thorium salt and in theory should also be able to consume spent nuclear fuel from typical uranium fission reactions.
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https://www.technologyreview.com/201...-four-decades/