How Many Humans Can The Earth Sustain?

Oct 21, 2013

There are 7 billion people on this planet today needing water, food and shelter. There will be another billion in 12 years. How many humans can the earth sustain? Steve Scher talks with Alan Weisman about strategies to ease the human impact on earth. Weisman has written “Countdown: Our Last, Best Hope For A Future On Earth.”

Produced by Hannah Burn.