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  1. Unsticking Spirit

    Efforts to extract the Mars rover from a sandpit will start November 16, but success is uncertain.

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  2. Ecosystems

    Impatiens plants are more patient with siblings

    Streamside wildflower holds back on leaf competition when roots meet close kin

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  3. Life

    Newborn cells clear space in brain’s memory-maker

    Rodent study offers first evidence that neurogenesis clears old memories in key part of the brain to make way for new ones.

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  4. Life

    Genetic effects suggest FOXP2 role in language evolution

    Human version of the protein alters activity of 116 genes compared with the chimp version.