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  • Battling over ballast

    Congress has tried to regulate ballast water in ships in order to stop the spread of zebra mussels, but so far loopholes in the law and tussles over policy have made the effort ineffective.

  • Welcome to the Homogocene

    The rapid spread of invasive species like quagga and zebra mussels could transform the once-isolated and ecologically unique West into just another McDonaldized patch of the planet.

  • Wish You Weren’t Here

    Quagga mussels – an extraordinarily prolific and costly invasive species – have appeared in Lake Mead, and no one is sure how to keep these unwanted newcomers from infesting the West.

  • Tipping the scales towards native species

    In Unnatural Landscapes, Ceiridwin Terrill travels to four arid sites to show how scientists fight to protect indigenous organisms from invasive species

  • Too much can be asked of a river

    Laura Paskus lives a mile and a half from the Rio Grande, a river which shares a dubious distinction with India’s Ganges and China’s Yangze: The three are among the Top Ten most endangered rivers on the planet.

  • Tiny stream invaders may harm Western trout

    The tiny New Zealand mud snails that are rapidly invading the West’s waters may pose a threat to the region’s trout

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