We just digitized NASA SP-509, vol. 4 Space Resources, Social Concerns.
You can see it at
http://lifesci3.arc.nasa.gov/SpaceSettlement/spaceresvol4/toc.html

If you find any errors (in the digitizing, not content!), please let
byager@... know.

Space tourism could be our ticket to the stars. Save your pennies,
suborbital flights for $100,000 may start in 2005! See
http://www.spaceadventures.com/suborbital for details.

Al Globus
CSC at NASA Ames Research Center
http://www.nas.nasa.gov/~globus/home.html

Views expressed in this email are only my opinions and are not the
position of any organization I'm familiar with.