English novelist Jane Austen is known for her polished prose, but her handwritten manuscripts reveal some telling grammatical errors. Hulton Archive/Getty Images hide caption

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In The Mind's Eye, Oliver Sacks looks at how blind people use other senses to "see" the world, and how people with aphasia and visionary disturbances learn to compensate with their other senses. hide caption

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Keith Richards is ranked 10th on  Rolling Stone's list of the 100 greatest guitarists of all time. Deborah Feingold hide caption

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Who Knew? For more than 20 years, research librarian Kee Malesky has answered questions for NPR reporters, editors and hosts. She has compiled some of her favorite bits of "inessential knowledge" — such as which building did Elvis leave last? -- in a new book, All Facts Considered. Robert P. Malesky hide caption

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From 'The Hammersteins'/Copyright Black Dog and Leventhal

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