5 invasive species now in retreat

Invasive species are ones that don't naturally occur in an area and may have detrimental effects.  Here are some eradication success stories.

Sources: Global Invasive Species Database, International Union for Conservation of Nature, National Cotton Council, US Dept. of Agriculture

1. Rinderpest virus

Described by the Global Invasive Species Database as a micro-organism, rinderpest had decimated cattle, buffalo, yak, and other livestock. The virus was declared eradicated by United Nations researchers in October, 2010, after a 23-year battle.

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