By 2050, the world's population could be close to 10 billion. They're all consumers and use the earth's resources to live.
The United States' population growth rate may have leveled off some time ago and the world's most populated nation -- China -- restricts how many children a family can have. But in developing countries, families are getting larger and larger.
Is there really an answer to this population growth and what affect will have on the Earth?
Guest: Robert Engelman, vice president for programs at the Worldwatch Institute and author of More: Population, Nature, and What Women Want
LISTEN TO THE PROGRAM
