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  1. Archaeology

    Ancient Angkor’s mysterious decline may have been slow, not sudden

    Analyzing sediment from the massive city’s moat challenges the idea that the last capital of the Khmer Empire collapsed suddenly.

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  2. Animals

    Hermit crabs are drawn to the smell of their own dead

    A new study finds that the smell of hermit crab flesh attracts other hermit crabs of the same species desperately looking for a larger shell.

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  3. Health & Medicine

    The FDA says don’t buy young plasma therapies. Here’s why

    Infusions of plasma from young people may hold the secret of youth, but there’s not much evidence to support the idea yet.