Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. Earth Science News .




ABOUT US
Study: African terrain may have pushed humans into walking on two feet
by Staff Writers
York, England (UPI) May 28, 2013


disclaimer: image is for illustration purposes only

Rugged landscapes in East and South Africa may have helped evolve humans' earliest ancestors from tree-dwelling quadrupeds to upright bipeds, scientists say.

Researchers at Britain's York University, working with French colleagues, say humans' upright gait may have its origins in prehistoric landscapes shaped during the Pliocene epoch by volcanoes and shifting tectonic plates.

Early hominins would have been attracted to the resulting terrain of rocky outcrops and gorges because they offered shelter and opportunities to trap prey but those same landscapes would have required more upright scrambling and climbing gaits, prompting the evolution of bipedalism, the researchers said.

That theory challenges traditional hypotheses that humans' early ancestors were forced out of the trees and onto two feet when tree cover declined because of climate change.

"Our research shows that bipedalism may have developed as a response to the terrain, rather than a response to climatically-driven vegetation changes," York researcher Isabelle Winder said in a university release.

"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."

That would have left the hands and arms of upright hominins free to develop increased manual dexterity and tool use, supporting a further key stage in the evolutionary story, the researchers suggested.

.


Related Links
All About Human Beings and How We Got To Be Here






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ABOUT US
170,000 living in subdivided flats in Hong Kong: study
Hong Kong (AFP) May 28, 2013
More than 170,000 people in Hong Kong are living in cramped subdivided flats, a government-commissioned study has found, underlining the scale of the city's housing crisis. Tens of thousands of low-income families and immigrants are forced to live in the tiny subdivided units, unable to afford sky-high rents in the crowded city of seven million. Hong Kong's Beijing-backed leader Leung Ch ... read more


ABOUT US
Africa plans emergency force, but can it deliver?

Remembering storm, Obama, Christie again the odd couple

Bill Gates hopeful of more aid from China

Japan nuclear lab accident affected 30: agency

ABOUT US
Helicopter-light-beams - a new tool for quantum optics

Just how secure is quantum cryptography

One Year Anniversary of KOMPSAT-3 Launch

Crystal-clear method for distinguishing between glass and fluids

ABOUT US
Small dams on Chinese river harm environment more than expected

Source of life running out: water scientists

S. Korea commission to probe $20 bln river project

Spain and France agree on fishing quota swap

ABOUT US
Russian scientists make rare find of 'blood' in mammoth

Study explores atmospheric impact of declining Arctic sea ice

The Antarctic polar icecap is 33.6 million years old

Slovenian flyer completes eco-friendly Arctic voyage

ABOUT US
Even farm animal diversity is declining as accelerating species loss threatens humanity

China's Shuanghui to buy US pork icon Smithfield

Colombia peace still distant despite a first deal

New research shows that potatoes provide one of the best nutritional values per penny

ABOUT US
Small earthquake rocks Wales

Hurricane Barbara hits land in Mexico, two dead

Chile begins evacuation near volcano

Massive Far East quake felt in Moscow, no casualties

ABOUT US
Climate change drowning the 'Venice of Africa'

Outside View: Somalia's Jubaland

Nigeria says women, children held by Boko Haram freed

Africa celebrates progress and 50 years of 'unity'

ABOUT US
Study: African terrain may have pushed humans into walking on two feet

170,000 living in subdivided flats in Hong Kong: study

Monkey teeth help reveal Neanderthal weaning

China newborn rescued from toilet pipe: report




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement