Observatory: Ant Species Losing Ground to Venomous Kind

[unable to retrieve full-text content]An aggressive species is being displaced in North America by a more aggressive ? and potentially dangerous ? species, according to a new study.

Source: http://www.nytimes.com/2013/02/26/science/ant-species-losing-ground-to-venomous-kind.html?partner=rss&emc=rss

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