On Tue, 8 Sep 2009 20:28:39 -0700 (PDT), you wrote: >It is a statistical certainty that Apollo era urine is still in >lunar and Terran orbit When I read this last night, it made me think of a science fiction story-- but it took me a while to track the title down. This is worth a read: http://www.asimovs.com/_issue_0805/Apollo8.shtml