Cooperative species can invade harsher environments
(PHYSorg.com Biology)

Through cooperation, animals are able to colonise harsher living environments that would otherwise be inaccessible, according to a new study from Lund University in Sweden, together with researchers in England and USA. The research community has long believed this was the other way around - that species in tough environments had to cooperate to survive. As a result the established view of why animals cooperate is turned upside-down.