Brian Hare: I think what dog evolution teaches us is that actually how you get ahead in the game of life, is you evolve a new way to be friendly that leads to a new form of cooperation. Humans ...

Art history offers a snapshot of what fruits and vegetables used to look like. Giovanni Stanchi, Watermelons, peaches, pears and other fruit in a landscape (1645–72). Courtesy of Christie’s.

Anderson Cooper: "Might makes right." Brian Hare: Yeah, but not at all. And dogs are Exhibit A of this. Brian Hare. Hare says it may be hard to imagine, but that sweet dog you love started out as ...