Can you define life in three words?

We are all sure we know what life is, but if you try to actually define it, things get tricky fast. I wrote a feature about the scientific struggle to define life in 2007 for Seed, and I've been keeping tabs on the evolution of this metaphysical quandary ever since. I was particularly intrigued to discover recently that one scientist thinks he can define life--and do so in just three words. I've written an essay about his short and sweet definition for the web magazine Txchnologist. Check it out.