“It’s very hard to put a number on a quantity that depends on future events, processes we don’t understand, and values that may change over time,” said Joel E. Cohenof the Rockefeller University in this interview with ECSP. “That doesn’t mean we have no problems and it doesn’t mean there’s nothing we can do.” There … Continue reading Watch: Joel E. Cohen on Solving the Resource-Population Equation in the Developing World