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David Cameron hints at arming Syrian rebels. Catholic cardinals have begun voting for a new Pope. And a Nasa space rover has established that conditions on Mars in the distant past could have supported primitive life. Presented by Ritula Shah.

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45 minutes

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Tue 12 Mar 201322:00
BBC Radio 4

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  • Tue 12 Mar 201322:00
    BBC Radio 4

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  • The World Tonight

    In depth reporting, intelligent analysis and major breaking news from a global perspective