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  1. Health & Medicine

    Tracking Tumors

    Researchers are trying to visualize molecular and cellular changes as a cancer responds to therapy in order to predict whether treatments are effective sooner than it's currently possible to determine.

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  2. Ivorybill Search

    The huge ivory-billed woodpecker has remained one of the United States’ most charismatic birds, even years after its presumed demise. In the latest effort to find the bird, a Zeiss-sponsored expedition this year sought the woodpecker in a Louisiana swamp. Catch up with the doings of the woodpecker’s many fans and learn more about its […]

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  3. From the February 27, 1932, issue

    PUSSY WILLOW Florists shops have long been offering big, beautiful, and expensive wands of pussy willows.