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Latest Human Stories

Impact Of Adversity On Early Life Development Demonstrated
2012-10-26 10:03:21

Study part of growing body of knowledge surrounding gene-environment interplay It is time to put the nature versus nurture debate to rest and embrace growing evidence that it is the interaction between biology and environment in early life that influences human development, according to a series of studies recently published in a special edition of the Proceedings of the National Academy of Sciences (PNAS). "Biologists used to think that our differences are pre-programmed in our genes,...

Humans Evolved To Live Longer Because Of Grandmothers
2012-10-24 07:50:47

Lawrence LeBlond for redOrbit.com - Your Universe Online Our grandmothers being there to care of us is something we all take for granted, and we have our ancestors to thank for that. New research indicates that human longevity is what it is because of grandmothers helping with childcare at an early stage in human history. Computer simulations on evolution have helped scientists prove that humans evolved longer life spans than apes because of their grandmotherly duties. When it comes to...

Evolution Is A Matter Of Brawn Vs Brain
2012-10-16 06:07:56

April Flowers for redOrbit.com - Your Universe Online Brain size relevant to body size has been the most common measurement of intelligence in animals, but it may not be as dependent on evolutionary selection of the brain as was previously thought. This is according to a new study published this week in the Proceedings of the National Academy of Sciences. A generation of scientists has used brain size relative to body size to predict an animal's intelligence. An example is the human...

2012-10-04 10:39:39

Like humans, monkeys can make irrational decisions when making choices When making decisions about the value of an assortment of different objects, people approximate an average overall value, which though frequently useful can lead to apparently irrational decision-making. A new study published Oct 3 in PLOS ONE by Jerald Kralik and colleagues at Dartmouth College shows for the first time that non-human primates also make similar 'irrational' choices based on approximation. In the...

Human Brain Growth Outpaces Chimps In Womb
2012-09-25 13:07:57

Watch the Video April Flowers for redOrbit.com - Your Universe Onlin A new study from Kyoto University shows that human's superior brain size in comparison to chimpanzees can be traced back to the womb. Appearing in the September 25 issue of Current Biology, the study is the first to track and compare brain growth in chimp and human fetuses. "Nobody knew how early these differences between human and chimp brains emerged," said Satoshi Hirata of Kyoto University. Hirata's research...

Killer Whale Menopause Helps Sons Survive
2012-09-14 08:43:49

Watch the Video: Killer Whales Near the San Juan Islands April Flowers for redOrbit.com - Your Universe Online Killer whale females have the longest period of menopause of any non-human species. A new study, led by the University of Exeter and the University of York, claims this is so the female Orcas can care for their adult sons. The research shows that for a male over 30, the death of his mother means an almost 14-fold increase in the likelihood of his own death within a year....

2012-09-12 14:11:06

Head to head: Are the causes of obesity primarily environmental? The ongoing obesity epidemic is creating an unprecedented challenge for healthcare systems around the world, but what determines who gets fat? Two experts debate the issue on bmj.com today. Timothy Frayling, Professor of Human Genetics at the University of Exeter thinks that genetic factors are the main driver for obesity in today's environment. Twin and adoption studies show consistently that variation in body mass index...

Metabolism Key To Length Of Human Pregnancy
2012-08-28 08:35:17

April Flowers for redOrbit.com - Your Universe Online It's not all in the hips, baby. The length of human pregnancy is limited primarily by a mother's metabolism, not the size of the birth canal, suggests a new study from the University of Rhode Island. This new research, published in the Proceedings of the National Academy of Sciences, challenges the long-held notion of an evolutionary trade-off between childbirth and a pelvis adapted for walking upright. Big brains and the...

Menopause Evolved To Limit Competition Between Mother & Daughter-In-Law
2012-08-23 12:33:07

Connie K. Ho for redOrbit.com — Your Universe Online A new study by investigators from the University of Turku in Finland, the University of Exeter in the United Kingdom, University of Sheffield in United Kingdom, and Stanford University finds that menopause evolved as a way to limit competition between a mother-in-law and her new daughter-in-law. Women normally experience menopause around 45 to 55 years of age and researchers have yet to understand its purpose. With a review of...

The Evolutionary History Of Humans In Europe
2012-08-15 13:28:42

April Flowers for redOrbit.com - Your Universe Online New analytical techniques are changing long-held, simplistic views about the evolutionary history of humans in Europe.  The study, reported in the journal Trends in Genetics, found that many cultural, climatic, and demographic events have shaped genetic variation among modern-day European populations and that the variety of those mechanisms is more diverse than previously thought. Recent advances in paleogenetics, or the study...


Latest Human Reference Libraries

Homo sapiens
2013-09-24 13:55:52

Homo sapiens is the scientific name for the human species. Homo is the human genus, which also includes Neanderthals and various other extinct species of hominid. H. sapiens is the only surviving species of the genus Homo. Modern humans are the subspecies Homo sapiens sapiens, distinguished from their direct ancestor, Homo sapiens idaltu (http://en.wikipedia.org/wiki/Homo_sapiens_idaltu). Subspecies of H. sapiens include Homo sapiens idaltu, roughly translated as “elder wise human” and...

0_fb61d1b290cba03d06f46aa5e2278549
2007-01-02 11:08:06

The common chimpanzee (Pan troglodytes), also known as the robust chimpanzee, is a great ape. Basic facts Common chimpanzees are found in the tropical forests and wet savannas of Western and Central Africa. They once inhabited most of this region, but their habitat has been dramatically reduced in recent years. Adults in the wild weigh between 88 and 143 lbs (40 and 65 kg). Males can measure up to 63 inches (160 cm) and females up to 51 inches (130 cm). They are lighter than humans...

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