Wildlife populations have fallen an average of 58 percent from levels in 1970, and are expected to fall by 67 percent from those levels by 2020. The planet is being stripped of flora and fauna and it's humanity's fault. Will we be able to survive this wave of extinction?
The history of child care in the United States, and listener mail.  
The overview effect is a cognitive shift in awareness commonly reported by astronauts, and it holds the key to a powerful emotion of awe that makes for a fulfilling life.
In collaboration with evolutionary biologists, we learn how Professor Gowdy focuses on the evolution of economic systems.
We speak with John Gowdy, the recipient of the Herman Daly Award for contributions to ecological economics, about the evolving field.