1000 idées pour la Corse

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#26 18-11-2017 18:34:21

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Re : Chimpanzés, néandertal

Human evolution was uneven and punctuated
A new study in Heliyon suggests that Neanderthals survived at least 3,000 years longer in Spain than we thought

https://www.sciencedaily.com/releases/2 … 132657.htm


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#27 19-11-2017 09:20:41

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Re : Chimpanzés, néandertal

Chimps give extra warning to buddies unaware of danger
Humans might not be the only species that considers a listener’s frame of mind.

https://www.nature.com/articles/d41586- … _PORTFOLIO



True altruism seen in chimpanzees, giving clues to evolution of human cooperation
By Michael PriceJun. 19, 2017 , 3:00 PM
https://www.sciencemag.org/news/2017/06 … ooperation


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#28 02-12-2017 22:34:36

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Re : Chimpanzés, néandertal

Chimpanzees who had been taught sign language not only resorted to swearing, but also to the use of a racial slur.
https://twitter.com/DegenRolf/status/936961405739298818
https://www.amazon.com/Swearing-Good-Yo … Emma+Byrne


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#29 17-12-2017 09:41:29

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Re : Chimpanzés, néandertal

Chimpanzee 'super strength' and what it might mean in human muscle evolution
Researchers conduct first direct chimp muscle measurements
    June 26, 2017
    University of Massachusetts at Amherst
https://www.sciencedaily.com/releases/2 … 155724.htm

Summary:
    For years, anecdotes and some studies have suggested that chimpanzees are 'super strong' compared to humans, implying that their muscle fibers are superior to humans'. Now a research team reports that contrary to this belief, chimp muscles' maximum dynamic force and power output is just about 1.35 times higher than human muscle of similar size, a difference they call 'modest' compared with historical, popular accounts of chimp 'super strength,' being many times stronger than humans.


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#30 23-01-2018 12:12:28

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Re : Chimpanzés, néandertal

Dopamine may have given humans our social edge over other apes
By Ann GibbonsJan. 22, 2018 , 3:10 PM

http://www.sciencemag.org/news/2018/01/ … other-apes

A new study suggests that the evolution of our unique social intelligence may have initially begun as a simple matter of brain chemistry.

Neuroanatomists have been trying for decades to find major differences between the brains of humans and other primates, aside from the obvious brain size. The human brain must have reorganized its chemistry and wiring as early human ancestors began to walk upright, use tools, and develop more complex social networks 6 million to 2 million years ago—well before the brain began to enlarge 1.8 million years ago, according to a hypothesis proposed in the 1960s by physical anthropologist Ralph Holloway of Columbia University.


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#31 14-03-2018 13:40:42

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Re : Chimpanzés, néandertal

Rolf Degen :
Chimpanzees immigrating to a new group abandon their superior nut-cracking technology in favor of the inferior local one, just in order to blend in.
https://twitter.com/DegenRolf/status/973870426966450176


Costly culture: differences in nut-cracking efficiency between wild chimpanzee groups
https://www.sciencedirect.com/science/a … 7217304190


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Chimps Eat Baby Monkey Brains First—A Clue to Human Evolution
The apes have surprising strategies for how they eat meat, a new study says.
https://news.nationalgeographic.com/201 … predators/


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#32 28-04-2018 20:02:54

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Re : Chimpanzés, néandertal

Hints of Human Evolution in Chimpanzees That Endure a Savanna’s Heat
The apes of Senegal’s Fongoli savanna may offer hints to how our own ancestors moved out of the woodlands, shed their fur and started walking upright.
https://www.nytimes.com/2018/04/27/scie … ution.html


The costs of living at the edge: Seasonal stress in wild savanna-dwelling
Erin G. Wessling, Hjalmar S. Kühl, Roger Mundry, Tobias Deschner, Jill D. Pruetz, 2018
https://www.sciencedirect.com/science/a … 8417303834


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#33 13-05-2018 10:48:01

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Re : Chimpanzés, néandertal

Unlike Humans, Bonobos Shun Helpers And Befriend The Bullies
January 4, 201812:02 PM ET
https://www.npr.org/sections/health-sho … ium=social

Even very young babies can tell the difference between someone who's helpful and someone who's mean — and lab studies show that babies consistently prefer the helpers.

But one of humans' closest relatives — the bonobo — makes a different choice, preferring to cozy up to the meanies.

That's according to experiments described Thursday in the journal Current Biology, by scientists who wanted to explore the evolutionary origins of humans' unusually cooperative behavior.


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#34 19-06-2018 08:02:14

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Re : Chimpanzés, néandertal

Steve Stewart-Williams
@SteveStuWill

Human brains are specialized for face recognition; chimp brains are specialized for butt recognition
https://twitter.com/SteveStuWill/status … 2056291328

Getting to the Bottom of Face Processing. Species-Specific Inversion Effects for Faces and Behinds in Humans and Chimpanzees (Pan Troglodytes)
Mariska E. Kret, Masaki Tomonaga
November 30, 2016
http://journals.plos.org/plosone/articl … ne.0165357

For social species such as primates, the recognition of conspecifics is crucial for their survival. As demonstrated by the ‘face inversion effect’, humans are experts in recognizing faces and unlike objects, recognize their identity by processing it configurally. The human face, with its distinct features such as eye-whites, eyebrows, red lips and cheeks signals emotions, intentions, health and sexual attraction and, as we will show here, shares important features with the primate behind. Chimpanzee females show a swelling and reddening of the anogenital region around the time of ovulation. This provides an important socio-sexual signal for group members, who can identify individuals by their behinds. We hypothesized that chimpanzees process behinds configurally in a way humans process faces. In four different delayed matching-to-sample tasks with upright and inverted body parts, we show that humans demonstrate a face, but not a behind inversion effect and that chimpanzees show a behind, but no clear face inversion effect. The findings suggest an evolutionary shift in socio-sexual signalling function from behinds to faces, two hairless, symmetrical and attractive body parts, which might have attuned the human brain to process faces, and the human face to become more behind-like.


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