Azure-winged magpies show human-like generosity

Magpies do not always have the best reputation, as they are generally known for their tendency to steal shiny things. Also other bird species tested for prosociality so far turned out to be either indifferent to benefitting ...

The roots of human altruism

Scientists have long been searching for the factor that determines why humans often behave so selflessly. It was known that humans share this tendency with species of small Latin American primates of the family Callitrichidae ...

How living systems compute solutions to problems

How do decisions get made in the natural world? One possibility is that the individuals or components in biological systems collectively compute solutions to challenges they face in their environments. Consider that fish ...

Monkey fights help explain tipping points in animal societies

Previous studies of flocks, swarms, and schools suggest that animal societies may verge on a "critical" point—in other words, they are extremely sensitive and can be easily tipped into a new social regime. But exactly how ...

Why guppies have genital claws

New research from evolutionary biologists at the University of Toronto shows that the male guppy grows claws on its genitals to make it more difficult for unreceptive females to get away during mating.

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