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In his new book, Lester Brown says the world's food supply is tightening -- and the reasons are many.
Climate change may transform how and where farmers grow the food to feed rising numbers of mouths.
From small-scale nuclear power plants to advanced reactor designs, what's next for the technology of nuclear power?
Ira talks about global sustainability with Lester Brown, head of the Earth Policy Institute.
How closely related are food supplies and the stability of a civilization?
March 22 is World Water Day. In this hour, we'll take a look at the technical and political challenges in providing clean water around the world.
Ira talks with Lester Brown of the Earth Policy Institute about the environmental problems facing the globe, and what can be done to take action to fix them.
A look at the science of sunscreen: how it intercepts the sun's rays, whether it...
Think caffeine dehydrates you? Or that you can't get too much water on a hot day...
Mayo myth-busters, a ketchup jar that never jams, and a salute to the pickle.
Plan a scientific summer getaway around Grand Canyon geology, tidepools or volca...
Thousands of lightning strikes occur each minute on Earth. We'll talk about the ...
Photographer Alan Friedman documents the sun’s many faces using telescopes, filters, cameras, and computer software.