Nearly a billion of the world's people live in extreme poverty, without adequate food, water, sanitation or power.
And when natural disasters strike the poorest, the suffering is compounded. In this hour, live from the annual meeting of the American Association for the Advancement of Science in St Louis, Missouri, we'll look at the causes of worldwide poverty, and the roles that nature and the environment play. Some experts say climate change change will take an increasing toll on the world's poor, as glaciers melt and sea levels rise.

What can scientists do to help? From clean water, to drought resistant crops and access to electricity, can science and technology help ease the suffering of the world's poorest people? 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:
Per Pinstrup-Andersen
H.E. Babcock Professor of Food, Nutrition and Public Policy
Cornell University
Ithaca, New York

John Mutter
Deputy Director/Associate Vice Provost, The Earth Institute at Columbia
Professor, Department of Earth and Environmental Sciences
Professor, International and Public Affairs
Columbia University
New York, New York

Benjamin Orlove
Anthropologist
Professor, Environmental Science and Policy
University of California-Davis
Davis, California

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This segment produced by Annette Heist