Karl Gawell

Aug. 15, 2008

Geothermal Energy

As part of our ongoing series on alternative energy sources, we'll take a look at methods to harvest energy from the heat beneath the surface of the Earth.

energy, geothermal, heat pump, drilling

AVAILABLE IN ITUNES

Michael Pollan Talks Plants and Food

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Summer's Here!

BOOKS BY OUR GUESTS

Mystery Box

Picture of the Week: The Sun

Photographer Alan Friedman documents the sun’s many faces using telescopes, filters, cameras, and computer software.

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