It was my impression that Teller-Ulam required Li6 as well as D.
Wrt planetary-expansionism providing protection against civilization
killers, recall that space-based environments are fragile. A big
Mars colony might provide redundancy, but L5 is doubtful.
Rich Schroeppel rcs@cs.arizona.edu
Received on Mon May 4 15:35:04 1998
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