Charles Darwin’s work arose in an era where many were thinking about the source of nature’s variety.

Science authors David Quammen and Carl Zimmer both have recent books showing that DNA is not only passed down from our ancestors but can also come from viruses, siblings, and even our children.

Science authors David Quammen and Carl Zimmer both have recent books showing that DNA is not only passed down from our ancestors but can also come from viruses, siblings, and even our children.