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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Teacher Feature: Ethnobotanist Tom Carlson

\tScience Friday salutes a great science teacher. "Office hours are some of my favorite hours of the week," says Tom Carlson, a medical doctor, ethnobotanist, and instructor of 1700 students annually at the University of California, Berkeley. One of Carlson's former students, SciFri associate senior producer Christopher Intagliata, told us that Carlson's class was the reason he got into science (listen here).

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