Reply to a comment  Reply to this comment  Cool_Dad3 writes:  in
response to cdincluded:  (This comment was removed by the site
staff.)  The Mars rover doesn't have the capability to test for
life; it can only test for the conditions suitable for life. The
"direct evidence" you seek will have to wait until at least
2020.  Given the new evidence, it is highly probable that Mars
did once sustain life.