Puzzle of ants' suicide mission to protect the nest

(PhysOrg.com) -- Scientists studying social insect behaviour have discovered a remarkable example of self-sacrifice in a species of ant found in Brazil.

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<p><a href="http://www.physorg.com/news141485303.html">Puzzle of ants' suicide mission to protect the nest</a></p> <p>(PhysOrg.com) -- Scientists studying social insect behaviour have discovered a remarkable example of self-sacrifice in a species of ant found in Brazil.</p>