New study of hunter-gatherers suggests social networks sparked evolution of cooperation
Ancient humans may not have had the luxury of updating their Facebook status, but social networks were nevertheless an essential component of their lives, a new study suggests.
Traders who 'sync up' make more money: study
(PhysOrg.com) -- Long-standing problems are quite often solved simultaneously by various people working alone. Take, for example, naturalists Charles Darwin and Alfred Russel Wallace, who separately proposed the theory of ...
Social scientists build case for 'survival of the kindest'
(PhysOrg.com) -- Researchers at the University of California, Berkeley, are challenging long-held beliefs that human beings are wired to be selfish. In a wide range of studies, social scientists are amassing ...
Ignorance is sometimes bliss
A range of examples suggests a lack of information about their fellows can favor cooperation and prevent conflict among animals—and even among genes.
Ants turn unwelcome lodgers into a useful standing army
Mercenary soldiers are notoriously unreliable because their loyalty is as thin as the banknotes they get paid, and they may turn against their employers before moving on to the next dirty job. Not so in fungus-farming ants, ...
Why do we gesticulate?
If you rely on hand gestures to get your point across, you can thank fish for that! Scientists have found that the evolution of the control of speech and hand movements can be traced back to the same place in the brain, which ...
Chimpanzees eat smart when it comes to mealtime
Chimpanzees watch what they eat and when, which may show that these primates are giving some thought to the quality of their food, according to Purdue University research.
Ant executions serve a higher purpose, research shows
Natural selection can be an agonizingly long process. Some organisms have a way of taking matters into their own hands, or—in the case of the ant species Cerapachys biroi—mandibles.
Evolution: Social exclusion leads to cooperation
Social exclusion as a punishment strategy helps explain the evolution of cooperation, according to new research published today in the Proceedings of the Royal Society B.
Estrogenic plants linked to altered hormones, possible behavior changes in monkeys
Eating certain veggies not only supplies key nutrients, it may also influence hormone levels and behaviors such as aggression and sexual activity, says a new study led by researchers at the University of ...
Predatory beetles eavesdrop on ants' chemical conversations to find best egg-laying sites
(Phys.org) -- Predatory beetles can detect the unique alarm signal released by ants that are under attack by parasitic flies, and the beetles use those overheard conversations to guide their search for safe ...
Neanderthal demise due to many influences, including cultural changes: study
As an ice age crept upon them thousands of years ago, Neanderthals and modern human ancestors expanded their territory ranges across Asia and Europe to adapt to the changing environment.
Dating drought or purple patch? How males choose mates
(PhysOrg.com) -- Males decide how much effort they put into courtship and which females to court based on how many others they have recently encountered and how attractive they were, according to a new study into the mating ...
Fungus farming ant genome reveals insight into adaptation of social behavior
The development of agriculture was a significant event in human cultural evolution, but we are not the only organisms to have adopted an agricultural way of life. In a study published online today in Genome Re ...