Fire ants spreading through southeast U.S. through landscape corridors

submitted by: nsf
Invasive fire ants. Crossing the border from South America to North America, they’re on-the-march across the U.S. Southeast and beyond. How does habitat – in particular, corridors that connect one place with another – help these ants spread? For more information visit: http://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=132165