Stephen Meyer's Signature in the Cell

CNN's John Sutter talks with evolutionary biologist David Wheeler about his new book, Darwin's Black Box. Wheeler: You believe that there was life on this planet starting like almost a billion years ago? Probably soon after the earth formed is the best estimate these days. What do we know that we didn't know when Darwin was hanging out?Wheeler: Tell us what happened in science in the last 100 years that leads you to write your first book and Stephen Meyer to write signature in cell.