"Our paper shows that no selfish strategies will succeed in evolution," Plotkin said. "The only strategies that are evolutionarily robust are generous ones."
MORE: http://www.sciencedaily.com/releases/2013/09/130902162716.htm
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Radical New View of Health: Stem Cells Are Wired for Cooperation, Down to the DNA
http://www.sciencedaily.com/releases/2013/09/130912143217.htm