Navigation Links
Study Sheds Light on Evolution of Tree-Dwelling Humans
Date:1/2/2013

WEDNESDAY, Jan. 2 (HealthDay News) -- In human evolution, walking on two legs is a big deal. It marks the debut of humans as animals who live on the ground instead of in trees -- and researchers now have evidence of when this change took place.

A new study suggests that "Lucy," a member of a prehistoric primate species that appeared about 3.5 million years ago in Africa, lived in both worlds. Lucy, the researchers believe, could both climb trees and walk on the ground.

Until now, the ankles and feet of the Australopithecus afarensis indicated that the species wasn't able to climb trees easily, the study authors noted in the new report. But the researchers, led by Dartmouth College associate professor of anthropology Nathaniel Dominy, looked at modern humans in Africa and the Philippines and found that they could effectively climb trees.

This dual ability has to do with the capacity of some of the people studied to bend their feet upward toward the shin, beyond the range of motion normally seen in modern humans, helping them to climb trees, the study authors explained.

The findings suggested that hunter-gatherers like Lucy could both climb trees and walk.

The study is published in the current issue of the journal Proceedings of the National Academy of Sciences.

More information

For more on Lucy, visit pbs.org.

-- Randy Dotinga

SOURCE: Dartmouth College, news release, Dec. 31, 2012


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Page: 1

Related medicine news :

1. Let crying babes lie: Study supports notion of leaving infants to cry themselves back to sleep
2. Mental Disorders Linked With Domestic Violence, Study Says
3. Prenatal Antidepressants Dont Raise Fetal, Infant Death Risk: Study
4. Imaging study examines effect of fructose on brain regions that regulate appetite
5. High Fat Diet Tied to Increased Diabetes Risk Nature according to University of Massachusetts study reviewed by Naturecast Products
6. A Feinstein Institute for Medical Research Study Shows Early Cognitive Problems among Those Who Eventually Get Alzheimer's
7. Car Crashes Common for Sleepy Doctors in Training: Study
8. Study reports racial disparities in pediatric appendicitis treatment tied to hospital type
9. Strange behavior: New study exposes living cells to synthetic protein
10. Vanderbilt study examines Affordable Care Acts impact on uncompensated care
11. Cancer-Related Fatigue Often Overlooked, Study Finds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study Sheds Light on Evolution of Tree-Dwelling Humans
(Date:5/28/2016)... ... May 28, 2016 , ... May 26, 2016- In search of the K. ... theme event of “K Warriors” on June 4, 2016 at Ashbury Hotel and Suites ... is sponsored and hosted by Shaolin Institute and sanctioned by KSF (Kungfu Sanda Federation), ...
(Date:5/27/2016)... Columbia, SC (PRWEB) , ... May 27, 2016 , ... ... launched a line of classic American timber frame barn kits, which can be found ... are inspired by historic American barn plans, and they highlight the craftsmanship of ...
(Date:5/27/2016)... ... 2016 , ... With over 60 percent of acute stroke survivors being left ... to aid in the rehabilitation process has steadily increased. Ekso Bionics had been working ... due to stroke. , Ekso Bionics has now received clearance from the U.S. Food ...
(Date:5/27/2016)... Texas (PRWEB) , ... May 27, 2016 , ... ... satisfying Army body fat composition regulations. This is the first time that Coolsculpting ... normally screened at least every six months to ensure they meet the prescribed body-fat ...
(Date:5/27/2016)... ... May 27, 2016 , ... With a team ... and food industries. Aside from its GMP accreditation, Validation Center is also a ... certified products, services and staff. , Validation Center is ISO17025 accredited and only ...
Breaking Medicine News(10 mins):
(Date:5/25/2016)... NORTH CHESTERFIELD, Va. , May 25, 2016 ... commercially-available next-generation sequencing test for wounds and infections. ... fungi, ALL parasites, and select viruses. The test ... infected area. David G. ... advanced molecular testing to facilitate wound healing: "We ...
(Date:5/25/2016)... PUNE, India , May 25, 2016 /PRNewswire/ ... Pipeline Review, H1 2016"market research report that provides ... complete with comparative analysis at various stages, therapeutics ... route of administration (RoA) and molecule type, along ... releases. It also reviews key players involved in ...
(Date:5/24/2016)...   , Study met ... bowel cleansing and superiority in , ... of the ascending colon   ... Norgine B.V. today announced new positive data from the phase ... preparation) versus standard 2 litre PEG with ascorbate. The study met ...
Breaking Medicine Technology: