QUESTION: 
Do you think we will ever find life larger than microorganisms on Mars?

ANSWER from Jack Farmer on November 20, 1996: 
I think it is unlikely that life could have progressed beyond simple
unicellular forms, although some of these may have developed into larger
colonial organisms. This really isn't so surprising when we stop and think
that life on our own planet only became multicellular, large and complex
within the past 600 million years, basically within the last 15% of Earth
history.