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  1. After West Nile Virus

    As biologists try to estimate the impact of West Nile virus on wildlife, it's not the famously susceptible crows that are causing alarm but much rarer species.

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  2. Computing

    Pictures Only a Computer Could Love

    New, unconventional lenses shape scenes into pictures for computers, not people, so that computer-equipped microscopes, cameras, and other optical devices can see more with less.

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  3. Math

    Crediting Basketball’s Three-Pointers

    The adoption of the three-point field goal in basketball changed the game. Initially, its impact was limited, but in recent years, shooting three-point baskets has had a significant effect on game strategy and outcome. Many sports fans can’t resist the lure of quantifying performance–ranking teams, rating players, and keeping various statistics.