Rancher Randy Thompson is fighting to keep the Keystone XL pipeline from being built in Nebraska. Guy Raz/NPR hide caption

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Richard Holbrooke and Katharine Pierce as students in 1961 at Brown University. Katharine Pierce hide caption

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Language drives Johnson's art since her illness, as depicted in her piece called Enthusiastic, created in 2009.

Courtesy of Walters Art Museum hide caption

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Derrick Bell, the first tenured black professor at Harvard Law School, died of cancer Wednesday. He is seen here in 2002.

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