In evolutionary terms, the difference between 2.1 and 2.2 children is a lot more important than the small difference sounds, especially as it accumulates over time.

A new study in Royal Society Biology Letters says that achieving that maximum offspring count is best accomplished by men if their partner is approximately 6 years younger and by women if their partner is approximately 4 years older.

This means that a man may not just be interested in a trophy wife, he may be thinking about the future of humanity. But this happens with women also. Women who find a new mate still choose a partner older than themselves, though younger than the first.

In a study to be published in the September issue of Psychological Science journal, researchers investigated how thinking about God and notions of a higher power influenced positive social behavior, specifically cooperation with others and generosity to strangers.

UBC PhD graduate Azim Shariff and UBC Assoc. Prof. Ara Norenzayan found that priming people with ‘God concepts’ – by activating subconscious thoughts through word games – promoted altruism. In addition, the researchers found that this effect was consistent in behaviour whether people declared themselves believers or not. The researchers also found that secular notions of civic responsibility promote cooperation and generosity.

A website dubbing itself 'YouTube for scientists' has been launched, saying the intent is to bring science closer to the people, according to backers Public Library of Science (PLoS), the National Science Foundation (NSF) and the San Diego Supercomputer Center (SDSC).

SciVee allows scientists to upload published papers, as well as a podcast presenting the paper. The groups behind the initiative say they are confident that it will contribute to the widespread dissemination and comprehension of science.

First, we don't see how it's YouTube if you can only upload a podcast and a printed article.

Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. New research now shows that just like humans, they display a fundamental sex difference in the organization of the brain, specifically in the corpus callosum, the region that connects the two cerebral lobes.

A recently published paper by Associate Professor of Psychology and Biology Kimberley A. Phillips (Hiram College), Chet C. Sherwood (George Washington University) and Alayna L. Lilak (Hiram College), reports finding both sex and handedness influences on the relative size of the corpus callosum.

The Johns Hopkins scientist who first showed that the absence of the protein myostatin leads to oversized muscles in mice and men has now found a second protein, follistatin, whose overproduction in mice lacking myostatin doubles the muscle-building effect.

Results of Se-Jin Lee’s new study show that while mice that lack the gene that makes myostatin have roughly twice the amount of body muscle as normal, mice without myostatin that also overproduce follistatin have about four times as much muscle as normal mice.

Lee, M.D., Ph.D., a professor of molecular biology and genetics, says that this added muscle increase could significantly boost research efforts to “beef up” livestock or promote muscle growth in patients with muscular dystrophy and other wasting diseases.

Neighborhood property values predict local obesity rates better than education or incomes, according to a study from the University of Washington being published online this week by the journal Social Science and Medicine. For each additional $100,000 in the median price of homes, UW researchers found, obesity rates in a given ZIP code dropped by 2 percent.

The study, based on analyses of responses to a telephone survey conducted in King County by the local health department and the federal Centers for Disease Control, found six-fold disparities in obesity rates across the Seattle metropolitan area. Obesity rates reached 30 percent in the most deprived areas but were only around 5 percent in the most affluent ZIP codes.