In the wake of controversy over the possible discovery of arsenic-eating life recently — a finding that could expand the bounds of what scientists think life is capable of — a basic question perhaps deserves revisiting:
Just what, exactly, is life?
"We don't have a very good definition of life," said researcher Christopher Voigt of the University of California, San Francisco, who works on synthetic biology. "It's a very abstract thing, what we call life, and at what point we say something doesn't have the necessary components versus it does, it just becomes way too murky."To read the rest of the article, click here.