Science news articles about 'friends and enemies'

... PhysOrg.com) -- Sometimes friends can become enemies and enemies become friends, and it`s difficult to understand exactly how or why the changes took place. A new study ...

Birds' alarm calls serve both to alert other birds to danger and to warn off predators. And some birds can pull a ventriloquist's trick, singing from the side of their mouths, according to a UC Davis ...

... have been called "walking chemical factories", because they produce many different odours for tasks such as recognising friends and enemies and signalling their status and role within ...

... in history and consider the possibility that what predicts long periods of conflict is how we respond to the actions of our friends and enemies in their conflicts." "This new empirically-grounded ...

... , rock music and hanging around with his friends. He works hard at school and tries ... room of his family's house in a cul-de-sac in Cardiff, is gaining him friends and enemies. He is winning plaudits from within ...

... in the Journal of Consumer Research. Titled "Are Close Friends the Enemy? Online Social Networks, Self ... cards they own and the amount of debt on them, and how many friends they have offline, among other questions. "The results suggest ...

... oxygenation and hemoglobin variations in skin in order to detect social cues, emotions and the states of our friends or enemies. Just think about the reddening and whitening ...

... in deciding who to befriend or to abandon - a "frenemy" is someone who is both friend and enemy while the old military ... of my enemy is my friend'. Animal social networks also use sophistication in judging social configurations ...