Saturday, December 10, 2016
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
New Rendlesham UFO witness comes forward
12-9-2016
A former security police officer has described the object he witnessed that night as 'not of this world'.
Legendary astronaut John Glenn dies aged 95
12-9-2016
Glenn became a national hero back in 1962 when he became the first American ever to orbit the Earth.
Actual dinosaur tail found preserved in amber
12-8-2016
The unprecedented 99 million-year-old specimen contains preserved bones, soft tissues and feathers.
Mars One delays first manned mission to Mars
12-8-2016
The Netherlands-based firm has pushed back its ambitious plans by several years due to funding issues.
Other news in this category
Actual dinosaur tail found preserved in amber
Posted 12-8-2016 | 35 comments
The unprecedented 99 million-year-old specimen contains preserved bones, soft tissues and feathers....
 
Japan is set to build a robotic Jurassic Park
Posted 11-19-2016 | 12 comments
Dino-a-Live will offer visitors the next best thing to real dinosaurs without the risk of being eaten....
 
Huge 'sea monster' fossil found in Antarctica
Posted 11-15-2016 | 14 comments
Palaeontologists have unearthed the fossil remains of a gigantic Cretaceous-era ocean predator....
 
World's first dinosaur brain fossil unearthed
Posted 10-29-2016 | 3 comments
The discovery was made by fossil hunter Jamie Hiscocks who found the specimen on a beach near London....
 
Right-handedness found in human ancestor
Posted 10-24-2016 | 4 comments
Dominant hand preference appears to date back to a time long before modern humans arrived on the scene....
 
What sounds did the dinosaurs really make ?
Posted 10-14-2016 | 16 comments
Contrary to popular belief, the dinosaurs probably did not make loud roaring noises like in the movies....
 
Gigantic dinosaur footprint found in Mongolia
Posted 10-1-2016 | 12 comments
Palaeontologists have identified a prehistoric Titanosaur footprint that is the size of a human torso....
 
Proteins found in prehistoric ostrich eggs
Posted 9-28-2016 | 5 comments
Scientists have discovered the world's oldest genetic information within 3.8 million-year-old eggshells....
 
Cancer evidence dates back 1.7 million years
Posted 9-19-2016 | 6 comments
Scientists have found signs of bone cancer in the fossil remains of an early South African hominin....
 
'Super-cute' dinosaur had built-in camouflage
Posted 9-16-2016 | 6 comments
Scientists have determined the skin color of a small forest dinosaur by analyzing its fossilized skin....
 
Storr Lochs Monster is a real-life Nessie
Posted 9-7-2016 | 3 comments
A near-complete ichthyosaur fossil found in Scotland is finally getting the attention it deserves....
 

 View: More news in this category
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2015
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ