Over a billion people in the world live in extreme poverty, plagued by disease, without enough food or clean water. In this hour of Science Friday, we'll take a look at some parts of the problems of global poverty, disease, and hunger. How can science be part of a solution? How can the tools of technology be used to help, not hinder, sustainable development around the world?

This broadcast is part of Think Global 2005, a collaboration of public radio programs each looking at how people fit into the complex web of global interactions in today's world. We'll also get the latest on a new advance in stem cell and therapeutic cloning research. Call in with your questions and comments at 1-800-989-8255 (2-3 Eastern). Teachers, find more information about using Science Friday as a classroom resource in the Kids' Connection.

Guests:

Richard Harris
Science Correspondent
National Public Radio

Jeffrey Sachs
Director, Earth Institute at Columbia University
Author, "The End of Poverty: Economic Possibilities for Our Time"
Quetelet Professor of Sustainable Development
Professor of Health Policy and Management
Special Advisor to UN Secretary-General Kofi Annan
New York, New York

Lester Brown
President, Earth Policy Institute
Author, "Outgrowing the Earth: The Food Security Challenge in an Age of Falling Water Tables and Rising Temperatures"
Washington, DC

Books/Articles Discussed:

"The End of Poverty: Economic Possibilities for Our Time," by Jeffrey Sachs. Penguin Press, 2005

"Outgrowing the Earth: The Food Security Challenge in an Age of Falling Water Tables and Rising Temperatures (W. W. Norton & Company, 2005)

(find books discussed on previous broadcasts)

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This segment produced by Annette Heist