Intelligence Gathering: The Study of How the Brain Evolves Offers Insight into the Mind (SPACE.com) SPACE.com - Is there really life out there?  Was a kinder, wetter Mars once dotted by bacterial blooms whose progeny now await our discovery?  Do unseen, alien microbes swim in the buried oceans of Europa, Callisto, or Ganymede?  What about Titan's sub-zero methane lakes?