Friday, August 18, 2017
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in
This news story is archived which means that, while it is still available to view, the information contained within may be outdated and the original source site/link may no longer be viewable.

For the most recent stories, please visit either the site's home page or main news section.

Why did humans evolve to walk upright ?

Posted on Thursday, 20 September, 2012 | Comment icon 53 comments | News tip by: Still Waters


Image credit: CC 2.0 possan

 
What are the advantages of human bipedalism over the locomotion methods of other animal species ?

It remains one of the biggest questions in human evolution, why did our ancestors evolve upright walking ? Is there a connection between walking upright and intelligence ? Did it provide some other advantages we haven't considered ? One of the most prevailing theories is that upright walking is more energy efficient than other locomotion methods, but how much truth is there to this ?

Physiologists Lewis Halsey and Craig White have been attempting to answer this question by comparing the efficiency of human walking to that of 80 other species. What they found was that human walking appeared to offer little advantage in terms of energy efficiency over other methods of locomotion. Surprisingly it also appeared that in some closely related animals with the same locomotion method ( such as two species of chipmunk ) there was a wider gap in walking efficiency than there was between humans and chimpanzees who employ very different locomotion methods.

"The researchers found that a typical mammal weighing 140 pounds (the average weight for humans) has a net cost of transport of 10."

  View: Full article

 Source: Smithsonian


  Discuss: View comments (53)

   


 
Recent comments on this story
Comment icon #44 Posted by Melo - on 8 October, 2012, 0:19
idk but i like the sex i make with them
Comment icon #45 Posted by synchronomy on 8 October, 2012, 2:25
Humans evolved to bipedalism because the food was on trees. Just simple as that. Then why did they ever leave the trees?
Comment icon #46 Posted by Abramelin on 8 October, 2012, 4:22
Then why did they ever leave the trees? To pick up the fruit that had dropped from the trees?
Comment icon #47 Posted by Render on 8 October, 2012, 12:01
There are at least twelve distinct hypotheses as to how and why bipedalism evolved in humans, and also some debate as to when. Bipedalism evolved well before the large human brain or the development of stone tools.[25] Bipedal specializations are found in Australopithecus fossils from 4.2-3.9 million years ago.[26] Recent evidence regarding modern human sexual dimorphism (physical differences between men and women) in the lumbar spine has been seen in pre-modern primates such as Australopithecus africanus. This dimorphism has been seen as an evolutionary adaptation of females to bear lumbar lo... [More]
Comment icon #48 Posted by regeneratia on 15 October, 2012, 23:34
So they could pick the apple from the tree of knowledge and gain access to the plemora without the demiurge, who was unable to access the plemora himself?
Comment icon #49 Posted by Junior Chubb on 16 October, 2012, 23:37
To pick up the fruit that had dropped from the trees? Never eat a windfall apple...
Comment icon #50 Posted by Professor Buzzkill on 16 October, 2012, 23:57
I think the aquatic ape theory makes the most sense as it explains a number of things which are a mystery in our evolution. It explains why we are hairless, why babies instinctively hold their breath underwater (unlike all land mammals) and why we walk upright as drowning is a very good why of ensuring that those who do not stand upright do not pass on their genes.
Comment icon #51 Posted by spud the mackem on 17 October, 2012, 0:13
So they could use weapons to ward off predators,or go out as Hunters ,not so long ago the Zulu nation used to send out teenage boys for a period of time,armed only with a spear,a knobkerrie (club) and a shield,if they survived and brought back a predators tail or ears they were regarded as true warriors,if they returned empty handed (no evidence of having killed a predator), they were still regarded as having passed the initiation into Adulthood, but were given other tasks,like guarding the village perimeter, or as herders or lookouts,and were classed as none fighting men.
Comment icon #52 Posted by sam12six on 18 October, 2012, 20:40
I think the aquatic ape theory makes the most sense as it explains a number of things which are a mystery in our evolution. It explains why we are hairless Or it would if we were vaguely fish shaped like whales and dolphins. Mammals that are not fish shaped (even those who spend a ton of time in the water) tend to have hair. why babies instinctively hold their breath underwater (unlike all land mammals) That's just untrue. A common cost effective way of ridding a bunch of dogs or cats of fleas is dipping. Basically, you mix a batch of poisonous water and make like John the Baptist. I've seen i... [More]
Comment icon #53 Posted by C235 on 19 November, 2012, 20:10
To carry tools on our shoulders?


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

5967963
256897
168820

 
Mystery of distant Kuiper Belt object deepens
8-17-2017
The next target of NASA's New Horizons probe is a space rock with some rather intriguing properties.
Scientists solve animal evolution mystery
8-17-2017
A sea algae boom has been credited with the rise of the first complex life forms in Earth's distant past.
Man finds snake on a supermarket pineapple
8-17-2017
A man in Edinburgh got the fright of his life on Tuesday when he found the reptile in his shopping.
Insect burgers to go on sale in Switzerland
8-16-2017
Insect-based edibles are beginning to appear in shops after a recent revision of food safety laws.
Other news in this category
'Frankenstein dinosaur' is 'missing link'
Posted 8-16-2017 | 0 comments
The mystery surrounding a dinosaur made up of various mismatched body parts has finally been solved....
 
13 million-year-old human ancestor unearthed
Posted 8-10-2017 | 22 comments
Palaeontologists have discovered the skull of what is thought to be mankind's earliest known ancestor....
 
World's largest ever dinosaur identified
Posted 8-9-2017 | 0 comments
A 70-ton titanosaur has been officially established as the largest land animal ever to walk the Earth....
 
Heavily armored dinosaurs also had camouflage
Posted 8-5-2017 | 21 comments
Dinosaurs equipped with spikes and bony plates may have also employed camouflage to avoid predators....
 
Could a human actually outrun a T. rex ?
Posted 7-17-2017 | 17 comments
Contrary to the plot of Jurassic Park, a rampaging Tyrannosaurus rex wouldn't actually move very fast....
 
Giant prehistoric crocodile had T. rex teeth
Posted 7-4-2017 | 2 comments
Palaeontologists have been studying the remains of a crocodile-like land predator from the Jurassic era....
 
Intense volcanism gave rise to the dinosaurs
Posted 6-20-2017 | 5 comments
A mass extinction event 200 million years ago made it possible for the dinosaurs to dominate the planet....
 
T. rex did not have feathers, say scientists
Posted 6-10-2017 | 16 comments
The idea that Tyrannosaurus rex had a thick plumage of feathers has been called in to serious doubt....
 
Ancient fossil bird found trapped in amber
Posted 6-9-2017 | 1 comment
The incredibly well-preserved hatchling is believed to date back 99 million years to the Cretaceous Era....
 
Earliest Homo sapiens unearthed in Morocco
Posted 6-8-2017 | 8 comments
The discovery casts doubt on the idea that modern humans evolved in a single 'cradle of humanity'....
 
Giant prehistoric sloth unearthed in LA metro
Posted 6-3-2017 | 4 comments
A recent excavation in the heart of Los Angeles has yielded evidence of giant prehistoric beasts....
 

 View: More news in this category
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ