Ronald T. Merrill

Jan. 14, 2011

The Poles, They Are A Changin'

A Florida airport recently had to close its main runway to repaint directional signs, due to the changing location of magnetic north. We'll talk about the planet's magnetic field.

geomagnetism, geophysics, magnetic field

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Michael Pollan Talks Plants and Food

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Mystery Box

Oliver Sacks: Hallucinations

In his latest book, neurologist Oliver Sacks explores the strange world of hallucinations, and documents his own experiments with psychedelic drugs.

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