Good By Design

Despite all evidence to the contrary, “the world is getting better,” argues physician and sociologist Nicholas Christakis. It’s in our genes.

When William James Got Hungry

In an excerpt from his new autobiography, Penn psychology professor Martin Seligman tells the little-known story of the American Psychological Association’s annual meeting in 1904, held at Penn. Its reverberations were profound—for Penn psychology professor Edwin Twitmyer and for American psychology.