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 ...

Seeing color traced back to genetic mutations

From the inside of our heads, it feels as if colors are intrinsic aspects of the outside world and our eyes are beautifully designed to see them. But we humans are merely sampling the possible ways of sensing the spectrum ...

Humans pack an efficient bite, but at a cost

New work by an international team of researchers shows that the cranium of modern Homo sapiens is poorly-suited to produce large biting forces due to an important limitation involving the jaw joint. The findings are consistent ...

How dogs make sense of size

(PhysOrg.com) -- University of Sussex psychologists have demonstrated an ability in domestic dogs to match acoustic and visual cues - a cognitive ability once thought to be found in primates only -when assessing size in other ...

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