Why Is Life the Way It Is?

Life on Earth is tied to carbon and water, but would this be the same for life forms that evolved on other worlds? This is just one of many questions that Biochemist and author Nick Lane talks about while visiting with Dr. Biology. Listen in as Nick explores not only life on our Earth, but also what it might be like on other planets. Nick also reads from his book, The Vital Question, and weighs in on the question of viruses – are they living or non-living?