Navigation Links
Early Humans More Advanced Than Thought
Date:10/28/2010

THURSDAY, Oct. 28 (HealthDay News) Early humans were using a highly skilled stone tool sharpening method 75,000 years ago in Africa, more than 50,000 years earlier than previously believed, a new study indicates.

This adds more evidence that modern behavior developed over time during the Middle Stone Age rather than after our ancestors migrated from Africa to Europe, as some scientists have thought.

Researchers from the University of Colorado at Boulder discovered that the delicate technique -- called "pressure flaking" -- was used by anatomically modern humans at Blombos Cave in South Africa during the Middle Stone Age. Previously, the earliest evidence of pressure flaking was from 20,000 years ago in France and Spain.

"This finding is important because it shows that modern humans in South Africa had a sophisticated repertoire of tool-making techniques at a very early time," study co-author Paola Villa, a curator at the University of Colorado Museum of Natural History, said in a university news release.

"This innovation is a clear example of a tendency to develop new functional ideas and techniques widely viewed as symptomatic of advanced, or modern behavior," she added.

Pressure flaking "takes place when implements previously shaped by hard stone hammer strokes followed by softer strikes with wood or bone hammers are carefully trimmed on edges by directly pressing the point of a tool made of bone on the stone artifact," according to background material in the study. Many stones -- with the exception of jasper, obsidian and high-quality flint -- also had to be heated before pressure flaking, researchers noted.

This technique enables better control of the sharpness, thickness and overall shape of two-sided items such as spearheads and stone knives, Villa explained.

The study appears in the Oct. 29 issue of Science.

More information

The Australian Museum has more about <
'/>"/>

Copyright©2010 ScoutNews,LLC.
All rights reserved  

Page: 1 2

Related medicine news :

1. Healthy Living Can Prevent Nearly 25% of Colorectal Cancers
2. The brains journey from early Internet to modern-day fiber optics -- all in 1 lifetime
3. Haptoglobin as an early serum biomarker of virus-induced type 1 diabetes in rats
4. Low Testosterone May Raise Risk of Early Death: Study
5. Proton therapy safe, effective for early-stage lung cancer patients
6. JCI online early table of contents: Oct. 18, 2010
7. Oklahoma clinical trial to test early detection technique for eye disease in premature infants
8. Mayo Clinic finds early success with laser that destroys tumors with heat
9. Nearly 1 in 5 W.Va. 5th Graders May Have High Blood Pressure
10. New Tool Shows Promise for Early Lung Cancer Screening
11. Effective methods for detecting early signs of tremor
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Early Humans More Advanced Than Thought
(Date:5/29/2015)... (PRWEB) May 29, 2015 Recently, ... on longevity in facelift surgery before the 46th National ... Vallarta, Mexico. In his presentation, Dr. Rohrich, a ... Teaching Professor of Plastic Surgery at UT Southwestern Medical ... facial rejuvenation as they relate to obtaining long term ...
(Date:5/29/2015)... Brooklyn, NY (PRWEB) May 29, 2015 The ... Scenes from old movies depicted dentists as sadists who dispense ... in the dentist chair. What's more, when it came to ... in the dentist chair ­ but that's all back in ... Dr. Leonard Umanoff's dental practice in the Sheepshead Bay ...
(Date:5/29/2015)... FL (PRWEB) May 29, 2015 Wimbledon ... provides vascular, electrocardiogram (EKG), echocardiogram and NCV testing, ... most recent guidelines for EKG interpretation of athletes. ... leading cause of death during athletic activity. New findings ... the continued discussion to improve cardiac safety in athletes. ...
(Date:5/29/2015)... BETHESDA, MARYLAND (PRWEB) May 29, 2015 ... changes in the management of medical data. , Today ... on Electronic Health Records (EHR). The “ Report ... Status and Future Direction of EHRs ” was released ... (JAMIA) jamia.org and represents an evolutionary ...
(Date:5/29/2015)... 2015 National Day of Sweden , ... around the world. The celebration held in Atlanta is organized ... with SWEA (Swedish Women’s Educational Association International, Inc.). ... the Swedish-American community in Georgia. , PartnerTech is ... heritage and the long relationship between Sweden and Georgia. PartnerTech ...
Breaking Medicine News(10 mins):Health News:Dr. Rod J. Rohrich Speaks on Longevity in Facelifts and Facial Rejuvenation 2Health News:Dr. Rod J. Rohrich Speaks on Longevity in Facelifts and Facial Rejuvenation 3Health News:Brooklyn Dentist Delivers Comfortable Care Through High Technology 2Health News:Brooklyn Dentist Delivers Comfortable Care Through High Technology 3Health News:Brooklyn Dentist Delivers Comfortable Care Through High Technology 4Health News:Wimbledon Health Partners Incorporates Updated ‘Seattle Criteria’ for EKG Interpretation of Athletes 2Health News:Wimbledon Health Partners Incorporates Updated ‘Seattle Criteria’ for EKG Interpretation of Athletes 3Health News:AMIA Issues Report on Electronic Health Records - EHR-2020 2Health News:AMIA Issues Report on Electronic Health Records - EHR-2020 3Health News:PartnerTech Co-Sponsors National Sweden Day Hosted by SACC-Georgia 2Health News:PartnerTech Co-Sponsors National Sweden Day Hosted by SACC-Georgia 3
... and retention, organizational relationships citedGAITHERSBURG, Md., April ... and facilities management services company, was named ... Companies for Latinos list, based on measurements ... and corporate/organizational communications from more than 400 ...
... can cause children real problems , , MONDAY, April 20 ... game players -- fully 8.5 percent -- exhibit signs ... , These kids aren,t just playing a lot. Their ... and friends and poses health problems, the study reveals. ...
... find healthier ways to shop, cook and liveOAKLAND, Calif., ... Maring has been recognized by EatingWell, publisher of the ... books, for his work to make locally grown food ... authored the introduction for a new cookbook, EatingWell ...
... In direct response to America,s aging population and ... gathered in Los Angeles to find creative approaches to ... - caring for a society where in two decades ... older."Our goal is to make quality care for the ...
... collaboration between Australia and Israel has identified a genetic ... syndrome. , The finding is published in the latest ... , Dr Helen Leonard, who heads the Australian Rett ... Research, said the finding was exciting in that it ...
... is that up a quarter of people with alcohol-related ... drinking. Alcohol-related cirrhosis develops silently but usually presents with ... is often fatal. , The study, led by Dr ... and consultant hepatologist at Southampton General Hospital, found that ...
Cached Medicine News:Health News:Sodexo Ranks Second on the 2009 DiversityInc Top Ten Companies for Latinos List 2Health News:Sodexo Ranks Second on the 2009 DiversityInc Top Ten Companies for Latinos List 3Health News:Almost 1 in 10 Young Video Game Users 'Addicted' 2Health News:Almost 1 in 10 Young Video Game Users 'Addicted' 3Health News:Kaiser Permanente Physician Celebrated for Contributions to Locally Grown Food Movement 2Health News:Kaiser Permanente Physician Celebrated for Contributions to Locally Grown Food Movement 3Health News:Healthcare Gathering Addresses Increasing Need of Caring for the Nation's Elderly Population 2Health News:Healthcare Gathering Addresses Increasing Need of Caring for the Nation's Elderly Population 3Health News:New insight into Rett syndrome severity 2Health News:New study finds continued abstinence is key to increased survival from alcohol-related liver disease 2
(Date:5/28/2015)... 28, 2015  CytomX, a biotechnology company developing Probody™ ... Sean McCarthy , D. Phil., chief executive officer, ... Healthcare Conference in New York ... 2015. Dr. McCarthy will provide an overview of CytomX,s ... Probody drug conjugate programs. About CytomX Therapeutics ...
(Date:5/28/2015)... HICKORY, N.C. , May 28, 2015 ... logistics (3PL) provider, announces winning the SDCE100 ... Supply & Demand Chain Executive ... a leading consumer goods distributor quantify and ... customers in their highly competitive market. Deploying ...
(Date:5/28/2015)... MONICA, Calif. , May 28, 2015 ... doctors to check a state prescription database before prescribing ... addiction and thousands of overdose deaths. SB ... Bell Gardens , will require prescribers to ... (CURES) before prescribing Schedule II and III drugs, like ...
Breaking Medicine Technology:Transportation Insight Wins SDCE100 Award for Delivering End-to-End Supply Chain Value 2Transportation Insight Wins SDCE100 Award for Delivering End-to-End Supply Chain Value 3Transportation Insight Wins SDCE100 Award for Delivering End-to-End Supply Chain Value 4California Senate Approves Legislation Requiring Physicians To Check State Database Before Prescribing Powerful, Addictive Medications, Says Consumer Watchdog 2
... PRINCETON, N.J., Dec. 11 Pharmasset, Inc.,(Nasdaq: ... of clevudine for the treatment of chronic hepatitis ... of R7128 for the treatment of,chronic hepatitis C ... in Drug,Development in Viral Hepatitis (HEP-DART) conference being ...
... BOULDER, Colo., Dec. 11 Magazines like Time, ... about the latest health trend,probiotics. Researchers have found ... key to digestive and immune health, but Eastern,Europeans ... probiotics, found in,fermented foods such as yogurt, for ...
Cached Medicine Technology:Pharmasset Announces Clevudine and R7128 Presentations at HEP-DART 2Pharmasset Announces Clevudine and R7128 Presentations at HEP-DART 3Pharmasset Announces Clevudine and R7128 Presentations at HEP-DART 4Pharmasset Announces Clevudine and R7128 Presentations at HEP-DART 5Pharmasset Announces Clevudine and R7128 Presentations at HEP-DART 6Are Muramyl Peptides the Magic Bullet in Probiotics? 2Are Muramyl Peptides the Magic Bullet in Probiotics? 3
... Oscors proprietary quadripolar pacing wire ... pacing and sensing in the ... two bipolar wires in one ... the atrium and ventricle are ...
... TME 227 T is a ... temporary cardiac pacing and monitoring ... The TME 227 T features ... myocardium, which allows safe and ...
For temporary cardiac pacing after open heart surgery. The zig-zag portion of the heartwire is embedded into the desired area of the myocardium (epicardially)....
For temporary cardiac pacing after open heart surgery. The zig-zag portion of the heartwire is embedded into the desired area of the myocardium (epicardially)....
Medicine Products: