natural selection

Humans walked upright to carry scarce resources


March 25th, 2012 - 6:41 pm ICT by IANS
Washington, March 25 (IANS) The necessity of carrying more of scarce, high quality resources may have prompted human beings to adapt to walking upright millions of years ago, a study ... Read more...

Posted in World |

Why humans actively help each other


May 4th, 2011 - 3:02 pm ICT by ANI
Washington, May 4 (ANI): Using simple robots to simulate genetic evolution over hundreds of generations, Swiss scientists have shed light on why do most social animals, including humans, go out of their ... Read more...

Posted in Health Science |

Neanderthal brains ‘were like modern human ones at birth’


March 24th, 2011 - 10:54 am ICT by ANI
London, Mar 24 (ANI): Researchers at the Max Planck Institute for Evolutionary Anthropology in Germany have discovered that Neanderthal brains were like modern human ones at birth but developed differently to ours ... Read more...

Posted in Health Science |

Stone tools helped human hand evolve unique features


March 9th, 2011 - 4:04 pm ICT by IANS
London, March 9 (IANS) Increased use of stone tools by our ancestors helped the human hand evolve unique characteristics.Past research has borne out the existence of features in the bones ... Read more...

Posted in World |

As far as evolution goes ‘bigger really is better’, says study


March 8th, 2011 - 6:41 pm ICT by ANI
Washington, Mar 8 (ANI): A new study has claimed that as far as evolution goes, 'bigger really is the better'.Organisms with bigger bodies or faster growth rates tend to live longer, mate ... Read more...

Posted in Health Science |

Why being too good looking might cut your chances with females


February 15th, 2011 - 5:31 pm ICT by ANI
Melbourne, Feb 15 (ANI): Traditional theory of evolution maintains that it's the good-looking male that gets the ladies, but a new study might prove otherwise.Research by the University of Queensland (UQ) has ... Read more...

Posted in Health Science |

Ashton Kutcher offers tips on ‘digital love’


December 10th, 2010 - 5:47 pm ICT by ANI
London, Dec 10 (ANI): It seems Ashton Kutcher likes communicating via the written word.The Hollywood actor has recently written an essay about romance in the modern age for an American magazine, ... Read more...

Posted in Entertainment |

Forget good looks, it’s gut bacteria that ‘influence choice of mate’


December 3rd, 2010 - 12:59 pm ICT by ANI
Washington, Dec 3 (ANI): New research has indicated that symbiotic bacteria inside a fruit fly greatly influence its choice of mates.Based on a theory developed by Prof. Rosenberg and Dr. Ilana Zilber-Rosenberg ... Read more...

Posted in Health Science |

Sickle cell gene’s global map supports ‘malaria hypothesis’


November 3rd, 2010 - 4:02 pm ICT by ANI
London, Nov 03 (ANI): University of Oxford scientists have produced the first detailed global map showing the distribution of the sickle cell gene, supporting the 'malaria hypothesis'.Haemoglobin S (HbS) is known to ... Read more...

Posted in Health Science |

Bacteria can lead to evolution of new species


November 2nd, 2010 - 1:30 pm ICT by ANI
London, Nov 2 (ANI): A new study has suggested that bacteria that live on the fruitfly Drosophila melanogaster can affect their host's choice of mate by altering the fly's pheromones.This in turn ... Read more...

Posted in Health Science |

Altruism could be the result of natural selection


August 26th, 2010 - 5:40 pm ICT by ANI
London, Aug 26 (ANI): Turning the so-called kin selection theory on its head, researchers have said that altruistic behaviour, such as sterile worker ants caring for the offspring of their queen, could ... Read more...

Posted in Health Science |

People are sexually attracted to their kin, and their own selves


July 30th, 2010 - 5:29 pm ICT by ANI
Washington, July 30 (ANI): People tend to develop an attraction towards others who resemble their kin or themselves, according to a research.In a series of experiments where subjects viewed photographs of their ... Read more...

Posted in Health Science |

Women will be more fertile in 40s, says study


July 23rd, 2010 - 8:38 am ICT by IANS
London, July 23 (IANS) The trend for having children later in life could lead to women becoming more fertile in their 40s, researchers at a British university have suggested. As many women ... Read more...

Posted in Health Science |

Mimicking natural selection could make brain implants more efficient


July 18th, 2010 - 2:51 pm ICT by ANI
London, July 18 (ANI): Brain implants designed in accordance with the principles of natural selection could prove more efficient, requiring a battery change less often.Implants stimulating nerve clusters deep within the brain ... Read more...

Posted in Health Science |

Human sperm gene is 600 million years old


July 16th, 2010 - 1:57 pm ICT by ANI
Washington, July 16 (ANI): Mammals' ability to produce sperm is very ancient, probably originating as early as 600 million years ago, according to new evidence found by researchers at Northwestern University Feinberg ... Read more...

Posted in Health Science |

Tibetans underwent ‘fastest genetic change’ in human history to thrive at high altitude


July 2nd, 2010 - 2:14 pm ICT by ANI
Washington, July 2 (ANI): Tibetans split off from the Han Chinese some 3,000 years ago and since then rapidly developed a unique ability to thrive at high altitudes and low oxygen levels, ... Read more...

Posted in Health Science |

Blame your ancestors if you don’t get a tan


June 22nd, 2010 - 12:51 pm ICT by ANI
Washington, June 22 (ANI): People who remain pale and never tan have their ancestors to blame for choosing to live in the northern reaches of the globe, while those who easily achieve ... Read more...

Posted in Health Science |

9/11 stress ‘tied to increased male baby miscarriages’


May 25th, 2010 - 4:51 pm ICT by ANI
Washington, May 25 (ANI): A new study has linked the psychological stress caused by the 9/11 attacks to miscarriages in women - especially for male babies.Tim Bruckner, assistant professor of public health ... Read more...

Posted in Health Science |

9/11 attacks linked to loss of male babies


May 25th, 2010 - 4:36 pm ICT by IANS
Washington, May 25 (IANS) The horrific 9/11 terror attacks may have also led to increased loss of male children in the US, even among those women who had no direct link to ... Read more...

Posted in Health |

American study analyses effects of testosterone on birds


May 14th, 2010 - 4:01 pm ICT by ANI
Washington, May 14 (ANI): A new American research demonstrates the costs and benefits of testosterone in birds.Individual male birds can differ dramatically in their behaviour, and this difference is often due in ... Read more...

Posted in Health Science |

Russell Brand criticized for encouraging youngsters to use drugs


April 16th, 2010 - 3:35 pm ICT by ANI
London, April 16(ANI): British comedian Russell Brand has been criticized for his comments which encouraged youngsters to use drugs.The TV personality had said that his generation was defined by musician who did ... Read more...

Posted in Entertainment |

Lizard moms pick larger mates to have sons, smaller for daughters


March 5th, 2010 - 3:24 pm ICT by ANI
Washington, Mar 5 (ANI): Brown anole lizards are pretty clever when it comes to choosing males to father their kids-they mate with large fathers to produce more sons and go for smaller ... Read more...

Posted in Health Science |

Tree-dwelling mammals live longer than earthbound ones


March 2nd, 2010 - 11:58 am ICT by IANS
Washington, March 2 (IANS) The squirrels littering your lawn with acorns as they bound overhead will live to plague your yard longer than the ones that aerate it with their burrows, according ... Read more...

Posted in Sci-Tech |

Species have to continue evolving to survive


February 26th, 2010 - 2:35 pm ICT by ANI
Washington, Feb 26 (ANI): A new study has proved that the 'Red Queen Hypothesis', which states that species were in a constant race for survival and have to continue to evolve new ... Read more...

Posted in Health Science |

Living in the trees may be the secret to longevity


February 23rd, 2010 - 2:51 pm ICT by ANI
London, Feb 23 (ANI): In a new research, scientists have determined that living in the trees may be the secret to longevity, at least in the evolutionary long run.Evolutionary biologists have long ... Read more...

Posted in Health Science |

Copper pipes may cause heart disease, Alzheimer’s


January 22nd, 2010 - 1:58 pm ICT by ANI
London, Jan 22 (ANI): Copper pipes can cause Alzheimer's disease and heart disease in people over 50, a new study has warned.In the study, researchers have suggested that people should remove old ... Read more...

Posted in Health Science |

New scientific approach could reveal pieces of human DNA favored by evolution


January 10th, 2010 - 12:32 pm ICT by ANI
Washington, January 10 (ANI): In a new research, scientists have come up with a method that could reveal the pieces of human DNA that have been favored by evolution because they confer ... Read more...

Posted in Health Science |

Secret of mushroom structure uncovered


December 13th, 2009 - 2:59 pm ICT by ANI
London, Dec 13 (ANI): A new American study has unveiled the perfect shape for a mushroom's fleshy gills.Professor Nicholas Money from Miami University, Oxford, US and Dr Mark Fischer from the College ... Read more...

Posted in Health Science |

Ancient birds may have lost teeth to get airborne


December 9th, 2009 - 1:27 pm ICT by ANI
London, December 9 (ANI): In a new research, scientists have suggested that ancient birds lost their teeth in order to shed some weight to get airborne.Archaeopteryx, at 150 million years old still ... Read more...

Posted in Health Science |

Brain-eating ritual in tribes trigger striking example of rapid human evolution


November 19th, 2009 - 3:34 pm ICT by ANI
London, November 19 (ANI): Scientists have discovered that a cannibalistic ritual in which the brains of dead tribes people were eaten by their relatives has triggered one of the most striking examples ... Read more...

Posted in Health Science |

Scientists find tropical butterflies that may soon split into two species


November 6th, 2009 - 3:42 pm ICT by ANI
Washington, November 6 (ANI): In a new research, scientists have found a population of tropical butterflies that may be on its way to a split into two distinct species.The researchers describe the ... Read more...

Posted in Health Science |

Largest orb-weaving spider discovered in South Africa


October 21st, 2009 - 12:40 pm ICT by ANI
Washington, October 21 (ANI): Scientists from the United States and Slovenia have discovered the largest orb-weaving spider in South Africa.The spider belongs to the Nephila species, and researchers have shown that on ... Read more...

Posted in Health Science |

Future woman ‘likely to be shorter, plumper, more fertile’


October 20th, 2009 - 2:18 pm ICT by ANI
Washington, Oct 20 (ANI): Women of the future are likely to be shorter, plumper, and more fertile, according to a new analysis of a long-term survey of human health.Over time advances in ... Read more...

Posted in Health Science |

Cities, human brains evolved in similar ways


September 4th, 2009 - 4:19 pm ICT by IANS
Washington, Sep 4 (IANS) Cities and human brains have evolved in strikingly similar ways, says a new study. Just as advanced mammalian brains require a robust neural network to achieve richer and more ... Read more...

Posted in Sci-Tech |

Mice living in sandy hills quickly evolved lighter coloration


August 28th, 2009 - 3:48 pm ICT by ANI
Washington, August 28 (ANI): Scientists at Harvard University have found that deer mice living in Nebraska's Sand Hills quickly evolved lighter coloration after glaciers deposited sand dunes atop what had been much ... Read more...

Posted in Health Science |

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