(PhysOrg.com) -- The fact that our female ancestors dispersed more than our male ancestors can lead to conflicts within the brain that influence our social behaviour, new research reveals.
Evolution
Sep 2, 2010
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In the war against antibiotics, bacteria aren't selfish. According to a new report from Howard Hughes Medical Institute (HHMI) researchers, a handful of resistant pathogens can protect an entire colony.
Cell & Microbiology
Sep 1, 2010
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(PhysOrg.com) -- Among monkeys that split child care responsibilities, sharing extends to dinnertime, but grudges do not, according to research published July 14 in Proceedings of the Royal Society B.
Plants & Animals
Jul 14, 2010
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(PhysOrg.com) -- In 1871, Charles Darwin puzzled over the evolution of altruism. "He who was ready to sacrifice his life, as many a savage has been," he wrote in The Descent of Man, "rather than betray his comrades, would ...
Evolution
Feb 26, 2010
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The concept of altruism has long been debated in philosophical circles, and more recently, evolutionary biologists have joined the debate. From the perspective of natural selection, altruism may have evolved because any ...
Plants & Animals
Nov 11, 2009
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(PhysOrg.com) -- The origins of altruism, the willingness to make personal sacrifices for the benefit of others often unknown to us, has perplexed evolutionary social scientists and biologists for years.
Social Sciences
Oct 23, 2009
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The evolution of altruism has long puzzled researchers and has mainly been explained previously from ultimate perspectives—I will help you now because I expect there to be some long-term benefit to me. However, a new study ...
Plants & Animals
Oct 14, 2009
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Subordinate individuals living within a group of vertebrates sometimes assist a more dominant pair by helping to raise the dominant pair's offspring and this has been shown to occur among subordinate female cichlids. Reporting ...
Plants & Animals
May 15, 2009
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