Wednesday, March 1, 2017
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Why did our ancestors start walking upright ?


Posted on Saturday, 25 May, 2013 | Comment icon 45 comments | News tip by: DieChecker


Image credit: CC 2.0 possan

 
What was it that lead our distant ancestors to move from walking on four legs to walking on two ?

One of the most prevailing theories concerns changes in the climate up to 2.5 million years ago which lead to the demise of large swaths of forest in Africa. As the trees made way for open savannah, it is believed, our ancestors adapted by developing the ability to walk upright. Now however this theory has been challenged by a team of archaeologists who have suggested the change was brought about not by climate change but by geology.

Volcanic activity and shifting tectonic plates in Africa at the time could have produced uneven terrain, deep gorges and other obstacles that favor bipedalism. "The broken, disrupted terrain offered benefits for hominins in terms of security and food, but it also proved a motivation to improve their locomotor skills by climbing, balancing, scrambling and moving swiftly over broken ground - types of movement encouraging a more upright gait," said study co-author Isabelle Winder.

"Being four-legged has its perks. As a quadruped, your center of gravity is lower, there's less wind resistance when you're running, and, best of all, you can use your hind foot to scratch your ear."

  View: Full article |  Source: Christian Science Monitor

  Discuss: View comments (45)

   


 
Recent comments on this story
Comment icon #36 Posted by Maz1 on 26 May, 2013, 21:10
There was a documentary 10 years ago which said that one of the reason we are bipedal is to conserve our energy for sex. *Goes back to my little hole*
Comment icon #37 Posted by bigjonalien on 26 May, 2013, 23:06
I'd like to know why we weren't born with four arms and two hearts?
Comment icon #38 Posted by DieChecker on 26 May, 2013, 23:06
Gorillas and Chimps walk tripod when carrying or dragging something. Those apes mostly have one baby at a time. Now imagine a sub-species of chimp that had two or more babies at a time... They'd need both hands to carry their babies.
Comment icon #39 Posted by Skithia on 27 May, 2013, 10:38
I am not going to waste my time trying to explain to yourselves.Your dual identities explain it all.Your explanations are not sufficient enough to me to warrant my explaining myself to you.Just get on with it all & accept the whole biblical truth. Why?
Comment icon #40 Posted by Abramelin on 27 May, 2013, 15:21
Why did our ancestors start walking upright? Maybe their knees started hurting:
Comment icon #41 Posted by Frank Merton on 27 May, 2013, 15:27
From the picture it is obvious we are not designed to walk on all fours. The thing is, we are descended from animals that were. Hence morning backache.
Comment icon #42 Posted by PersonFromPorlock on 27 May, 2013, 15:55
this makes me wonder.. what was in his other hand? Paperwork. It started early.
Comment icon #43 Posted by starchild1976 on 30 May, 2013, 6:39
It was to help the chicken cross the road.
Comment icon #44 Posted by Artaxerxes on 7 August, 2013, 3:37
It takes less energy to walk bi-pedal on two legs than it does on four legs. It's as simple as that. Food/energy/calories were at a premium and our ancestors had to save energy any way they could. They had to go further to feed and it was cheaper energy wise to walk on two legs than on four.
Comment icon #45 Posted by SkepticalB on 7 August, 2013, 5:21
I always assumed it was so they could learn to strut


Please Login or Register to post a comment.


  On the forums
Exactly what color are these strawberries ?
3-1-2017
An intriguing optical illusion involving a plate of strawberries has been doing the rounds online.
Eerie new robot 'Handle' officially revealed
3-1-2017
Robotics firm Boston Dynamics has released new footage of its unnerving new two-wheeled robot 'Handle'.
Should we really bring back extinct species ?
2-28-2017
A new study has indicated that resurrecting long-extinct species could ultimately do more harm than good.
Deep-sea jellyfish looks like a flying saucer
2-28-2017
Marine biologists have recorded footage of a remarkable jellyfish in the depths of the South Pacific.
Other news in this category
Fossil of ancient giant penguin unearthed
Posted 2-27-2017 | 0 comments
This newly described species of penguin is thought to have walked the Earth over 60 million years ago....
 
Prehistoric worm with huge jaws discovered
Posted 2-23-2017 | 8 comments
Scientists have identified a previously unknown species of primordial giant worm with huge snapping jaws....
 
'Tully monster' mystery continues to endure
Posted 2-20-2017 | 19 comments
A peculiar prehistoric discovery has left scientists scratching their heads for more than five decades....
 
Ancient sea monster gave birth to live young
Posted 2-14-2017 | 4 comments
Scientists have discovered that not all prehistoric marine reptiles laid eggs like crocodiles do....
 
Unusual pterosaur species ate like a flamingo
Posted 2-6-2017 | 0 comments
The earliest known filter-feeding pterosaur has been unearthed in northeast China's Liaoning province....
 
Prehistoric iguana found at dinosaur nest site
Posted 1-31-2017 | 0 comments
Discovered in northwestern Montana, this ancient lizard lived in the desert around 75 million years ago....
 
Scientists find oldest known human ancestor
Posted 1-30-2017 | 13 comments
Known as Saccorhytus, this tiny creature is the earliest known step on the evolutionary path of mankind....
 
'Alien' insect is unlike any ever seen before
Posted 1-30-2017 | 13 comments
The find is so unusual that it has had to be assigned to a whole new branch of the insect family tree....
 
Fossils of giant otter unearthed in China
Posted 1-23-2017 | 7 comments
Paleontologists have revealed the discovery of a prehistoric otter that was around the size of a wolf....
 
Did humans wipe out Australia's megafauna ?
Posted 1-22-2017 | 5 comments
A new study has cast doubt on the idea that climate change wiped out most of Australia's huge beasts....
 
Prehistoric human DNA found on cave floor
Posted 1-8-2017 | 6 comments
Scientists have found a way to identify the DNA of our ancestors from prehistoric bone dust samples....
 

 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