United States Geological Survey: Research on Invasive Species

This is the homepage of the United States Geological Survey's (USGS) Invasive Species Program. Materials include information about the program, news articles, and information on research projects arranged by species, project, or region. There is also contact information for researchers and experts, as well as links to publications, events, and other sites with related information. Educational levels: Middle school, High school, Undergraduate lower division