Help keep Salon independent

Gregory Berns

Gregory Berns, M.D., Ph.D., is the Distinguished Professor of Neuroeconomics at Emory University.

(<a href='http://www.shutterstock.com/gallery-428239p1.html'>Ermolaev Alexander</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

How do dogs think?

Gregory Berns