30-08-2017 13:44 via theguardian.com

The science behind Houston’s fire ant flotillas – video

Houston has experienced an unexpected side-effect of the floods that have hit the Texan city – floating islands made up of thousands of venomous fire ants. The naturally aggressive ants are able to survive the rising water by forming rafts with their own bodies, and can survive for weeks before breaking up
Flotillas of fire ants add new layer of horror to post-Harvey flood havoc
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