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  1. Plants

    Recent tree scourge poses garden threat

    Lab tests suggest that a lethal disease of oak trees in California and Oregon could strike some popular garden shrubs in the rhododendron family.

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  2. Plants

    Disease outpacing control in largest chestnut patch left

    An unusual test of a biological control for the blight that's killing American chestnuts doesn't look good in the largest remaining patch.

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  3. Speech loses beat in dyslexia

    The severe reading disorder known as dyslexia may involve an inability to perceive a critical rhythmic beat that separates parts of spoken words.

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  4. Health & Medicine

    Ulcer bug linked to stroke

    Potent strains of an ulcer-causing bacterium may also trigger strokes.