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Getting a good night's sleep is hard for a lot of people, but imagine trying to drift off when you have terrifying hallucinations.

Betsan Corkhill founded Britain's therapeutic knitting movement — the clinical application of knitting to treat a variety of mental and physical ailments. 

First it was vinyl; now, it's the typewriter. Vintage Smith-Coronas and Olivettis are hot items on Ebay and making a comeback in the age of computers. Philosopher Richard Polt assesses the typewriter revolution.

The celebrated cartoonist Lynda Barry has a deep theory of creativity that she's explored through books and popular workshops.  

Wade Davis has been called the Indiana Jones of anthropology. He says the aboriginal people of Australia have a fundamentally different way of seeing the world than we do in modern society.

Botanist Robin Kimmerer describes her field experiments as like interviewing a plant. As both a Ph.D biologist and a member of the Potawatomi Nation, she's trying to reconcile modern science with the wisdom of her Native elders.

You'd never think a book about chopping and burning wood would turn into a runaway bestseller, but Lars Mytting's "Norwegian Wood" is a publishing sensation in Scandinavia. 

Africa needs to reclaim its history and its technology, says Clapperton Mavhunga, a native of Zimbabwe who's a professor in MIT's Program in Science, Technology and Society. He says the traditional hunt is a great example of how Africans have passed on generations of knowledge.

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