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Curiosity Rover Zaps A Rock, Starts To Roll

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Not long after touchdown, the Curiosity rover tested its ChemCam instrument by blasting a nearby rock with a laser. Now it's rolling toward Glenelg, a rocky area in the Gale Crater, to do more zapping and some drilling. Mars Science Lab deputy project manager Richard Cook talks about what the rover might find.
NPR

Chinese Dissident Artist Ai Weiwei Restricted To 20-Day U.K. Visa

Ai says he was denied a six-month visa because U.K. officials said he didn't list a criminal conviction in his application. Ai was imprisoned in China, but he notes he was never charged with a crime.
NPR

Humans Aren't The Only Ones To Go Ape Over Diets: Chimps Detox, Too

A group of Ugandan chimps has found a great way to boost their mineral intake and neutralize bitter compounds in their diet: by eating clay.
WAMU 88.5

The Politics Hour - July 31, 2015

Join us for our weekly review of the politics, policies, and personalities of the District of Columbia, Maryland and Virginia.

NPR

Debris Found In The Indian Ocean May Be From Missing Malaysia Airlines Jet

Investigators believe a piece of debris found on the French island of Réunion in the Indian Ocean could be from Malaysia Airlines Flight 370, which disappeared in March 2014.

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