Results for keyword: invasive
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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
by Aaron Gilbreath, May 14, 2007 -
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.
by Michelle Nijhuis, Mar 05, 2007






