Christoph Adami: Finding life we can't imagine | Video on TED.com

Christoph Adami: Finding life we can't imagine | Video on TED.com: How do we search for alien life if it's nothing like the life that we know? At TEDxUIUC Christoph Adami shows how he uses his research into artificial life -- self-replicating computer programs -- to find a signature, a 'biomarker,' that is free of our preconceptions of what life is.