David Duffy

Human DNA Is Everywhere. That’s a Boon for Science – And an Ethical Quagmire.

We cough, spit, shed and flush our DNA into all of these places and countless more. Signs of human life can be found nearly everywhere, short of isolated islands and remote mountaintops, according to a new University of Florida study. That ubiquity is both a scientific boon and an ethical dilemma, say the UF researchers who sequenced this widespread DNA.