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Modern humans emerged far earlier than previously thought

A team of researchers has uncovered well-dated human fossils in southern China, pushing back the known emergence of modern humans by at least 60,000 years. The discovery indicates that early modern humans co-existed with late archaic humans for tens of millennia across Eurasia.

SourceWashington University in St. Louis·JournalProceedings of the National Academy of Sciences·DateOct 25, 2010

It was brawn over beauty in human mating competition

Research suggests that physical prowess was the key factor in human mate competition, with men competing for dominance and access to mates. Men are stronger than 99.9% of women, despite average differences in size, due to increased muscle mass.

SourcePenn State·JournalEvolution and Human Behavior·DateMay 13, 2010
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Human ancestors more primitive that once thought

A team of researchers has determined that human ancestors outside of Africa were more primitive than previously thought, based on analysis of 1.8 million-year-old fossils found in Dmanisi, Georgia. The species had a small stature and brain size similar to earlier African species, with some modern aspects of lower limb morphology.

SourceWashington University in St. Louis·JournalNature·DateSep 20, 2007

Study: Long legs are more efficient

A recent study published in The Journal of Experimental Biology suggests that longer legs are more efficient due to reduced force production and lower energy cost. According to the LiMB model developed by Herman Pontzer, this is because longer limbs require less force to move, resulting in decreased energy expenditure.

SourceWashington University in St. Louis·JournalJournal of Experimental Biology·DateMar 12, 2007
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Does father know best?

A study by Kermyt G. Anderson investigated the correlation between men's perceptions of fatherhood and actual paternity rates worldwide. The results show that men with high paternity confidence are indeed the biological fathers over 98% of the time, while those with low confidence are incorrect in more than 70% of cases.

SourceUniversity of Chicago Press Journals·JournalCurrent Anthropology·DateApr 17, 2006

Non-Western Folk Belief: Another Way To View Procreation

A study on non-Western folk beliefs found that partible paternity is a common concept among indigenous groups in South America and New Guinea. This ancient tradition suggests that every man who contributes sperm during pregnancy biologically contributes to the child, challenging the long-held assumption of a single biological father.

SourcePenn State·DateJan 22, 1999