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Brown-red ants climb over a pile of white translucent larvae and orange pupae. Some use their mandibles to position the larvae.
Ant Pupae Feed Adults, Larvae with Secreted Liquid 
The molting fluid of ant pupae functions as “metabolic currency” in the ant colony and may have enabled the evolution of eusociality. 
Ant Pupae Feed Adults, Larvae with Secreted Liquid 
Ant Pupae Feed Adults, Larvae with Secreted Liquid 

The molting fluid of ant pupae functions as “metabolic currency” in the ant colony and may have enabled the evolution of eusociality. 

The molting fluid of ant pupae functions as “metabolic currency” in the ant colony and may have enabled the evolution of eusociality. 

kin selection

Evolution of Kin Discrimination
Ashley P. Taylor | Jul 6, 2015 | 4 min read
A bacterium’s ability to distinguish self from non-self can arise spontaneously, a study shows, reigniting questions of whether the trait can be considered an adaptation.
Connecting the Dots
Anna Azvolinsky | Aug 1, 2014 | 8 min read
Extending her initial studies of social wasps, Mary Jane West-Eberhard has spent her career probing the evolutionary relationship between social behavior and developmental flexibility.
The Upside of Suicide
Sabrina Richards | Mar 20, 2013 | 3 min read
Researchers show that a bacterium’s self-sacrifice can benefit its community, even when the members are not strongly related.
Corina Tarnita: The Ant Mathematician
Jessica P. Johnson | Sep 1, 2011 | 3 min read
Junior Fellow, Harvard Society of Fellows, Harvard University. Age: 28
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