Tom Chaffin

Tom Chaffin is research professor of history at the University of Tennessee, Knoxville. He is author of Pathfinder: John Charles Frémont and the Course of American Empire and a forthcoming book on Frederick Douglass's 1845-46 lecture tour of Ireland.

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How a Psychedelic Masterpiece Is Made

A short documentary about Bruce Riley, an artist who paints abstract wonders with poured resin

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Hidden away on Google’s campus, doctors are changing the way people think about health.

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How to Build a Tornado

A Canadian inventor believes his tornado machine could solve the world's energy crisis.

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What Happened to the Milky Way?

Light pollution has taken away our ability to see the stars. Can we save the night sky?

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