Navigation Links
They were what they ate
Date:6/27/2012

You are what you eat, and that seems to have been true even 2 million years ago, when a group of pre-human relatives was swinging through the trees and racing across the savannas of South Africa.

A study published in the journal Nature reveals that Australopithecus sediba, an ape-like creature with human features living in a region about 50 miles northwest of today's Johannesburg, exclusively consumed fruits, leaves and other forest-based foods, even though its habitat was near grassy savanna with its rich variety of savory sedges, tasty tubers and even juicy animals.

"This astonished us," explains Benjamin Passey, a Johns Hopkins University geochemist on the international team that conducted the study. "Most hominin species appear to have been pretty good at eating what was around them and available, but sediba seems to have been unusual in that, like present-day chimpanzees, it ignored available savanna foods." (Watch a video about the discovery here: http://www.youtube.com/watch?v=6IaZwDavDDI)

These new findings add detail to the emerging picture of our various pre-human relatives, and why some thrived and continued to evolve, while others became extinct.

"We know that if you are a hominin, in order to get to the rest of the world, at some point you must leave the forests, and our ancestors apparently did so," said Passey. "The fates of those that did not leave are well-known: They are extinct or, like the chimpanzee and gorilla today, are in enormous peril. So the closing chapter in the story of hominin evolution is the story of these 'dids' and 'did nots.'"

In order to learn what these 4-foot-tall, small-brained, bipedal beings had for dinner most nights 2,000 millennia ago, Passey wielded a laser to extract and vaporize infinitesimal bits of fossilized tooth enamel from two Au. sediba individuals.

He then used a mass
'/>"/>

Contact: Lisa DeNike
Lde@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert  

Page: 1 2

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
They were what they ate
(Date:8/20/2014)... screening outcomes of approximately 3 million infants, a team ... the University of Massachusetts Medical School, have shown that ... successfully implemented across public health newborn screening programs. Data ... 20 issue of the Journal of the American ... of SCID in newborns is higher than previously thought ...
(Date:8/20/2014)... has awarded the Oklahoma Medical Research Foundation a five-year, ... and the bacteria,s effects on humans. , For ... colleagues have studied the human immune response to anthrax ... Immunology. The original funding came soon after anthrax-laced letters ... the terrorist attacks of Sept. 11, 2001. , ...
(Date:8/20/2014)... EUGENE, Ore. -- When are athletes who have suffered ... of Oregon study has found that high school athletes ... within 60 days experience a significant regression in their ... , The regression, as seen in changes in their ... of 19 athletes. Ten of the 12 had returned ...
Breaking Biology News(10 mins):Newborn screening expansion offers early diagnosis and treatment to infants with SCID 2Newborn screening expansion offers early diagnosis and treatment to infants with SCID 3$14.5 million grant awarded to continue anthrax studies 2Recovery reversal seen in Oregon study of returning concussed athletes 2Recovery reversal seen in Oregon study of returning concussed athletes 3
... effects of antioxidants such as vitamin C. Scientists at ... of lipid the ability of antioxidants, such as ascorbic ... against the generation of potential cancer-forming compounds in the ... “Our results illustrate how diet can influence gastric biochemistry? ...
... differs from other individuals, the level at which those ... person to another, scientists have learned. And though some ... different populations ?Asians versus Europeans, for instance ?more of ... the biological meaning of "race." , The findings ...
... Al Gore's film, An Inconvenient Truth, has generated greater ... the more rapid warming that has occurred within major ... 10 degrees hotter than their surroundings. These metropolitan hot ... can stress the animals and plants that make their ...
Cached Biology News:Individuals and populations differ in gene activity levels, not just genes 2City ants take the heat 2
(Date:8/20/2014)... Aug. 20, 2014  PAREXEL International Corporation (NASDAQ: ... presenting at the Baird Healthcare Conference in New York.  ... Financial Officer, will be making a presentation on PAREXEL ... Wednesday, Sept. 3, 2014. A live webcast ... section of PAREXEL,s website at www.PAREXEL.com in ...
(Date:8/20/2014)... Canada (PRWEB) August 20, 2014 Not ... that E&L studies should be performed late in the ... is known. But current regulatory trends suggest that, like ... on the rise. In recent years, multiple drug sponsors ... packages or address specific questions during phase I/II. It’s ...
(Date:8/20/2014)... nerves in your ear could improve the health of ... the University of Leeds used a standard TENS machine ... electrical pulses to the tragus, the small raised flap ... of the ear canal. , The stimulation changed the ... reducing the nervous signals that can drive failing hearts ...
(Date:8/20/2014)... August 20, 2014 GraphDB™ ... today including improvements to the enterprise replication cluster, ... for Lucene, SOLR and Elasticsearch. This release happens ... high performance triplestore – GraphDB™ was formerly known ... deploying the only mature enterprise resilient RDF triplestore ...
Breaking Biology Technology:PAREXEL International To Present At Baird Healthcare Conference 2Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2'Tickling' your ear could be good for your heart 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4
... RICHMOND, Virginia, ROSH HA,AYIN, Israel, June 16 ,EnzySurge ... advanced,chronic wound management, recently announced the formation of ... and practitioners with diversified expertise in chronic wounds.,The ... MD, PhD, Diane L.,Krasner, PhD RN, FAAN, Joseph ...
... June 16 Alexandria Real Estate,Equities, Inc. (NYSE: ... 100 life science,executives from around the world on ... environmentally sustainable operations in the San Diego life,science ... being held in,conjunction with the Biotechnology Industry Organization,s ...
... data management product for the, hospital ... connection, BOTHELL, Wash., June 16 Cardiac ... flagship HeartCentrix(R) data,management product for the hospital market. ... across all facilities within a,hospital network. Cardiac Science ...
Cached Biology Technology:EnzySurge, Maker of DermaStream(TM), Announces the Formation of its Scientific Advisory Board 2EnzySurge, Maker of DermaStream(TM), Announces the Formation of its Scientific Advisory Board 3EnzySurge, Maker of DermaStream(TM), Announces the Formation of its Scientific Advisory Board 4Alexandria Real Estate Equities, Inc. Features Green Buildings and Sustainable Operations Initiatives and Tour at 2008 BIO 2Alexandria Real Estate Equities, Inc. Features Green Buildings and Sustainable Operations Initiatives and Tour at 2008 BIO 3Alexandria Real Estate Equities, Inc. Features Green Buildings and Sustainable Operations Initiatives and Tour at 2008 BIO 4Cardiac Science Launches 'Anywhere' Data Management for HIS and EMR Systems 2Cardiac Science Launches 'Anywhere' Data Management for HIS and EMR Systems 3Cardiac Science Launches 'Anywhere' Data Management for HIS and EMR Systems 4
... MultiScribe Reverse Transcriptase is a recombinant ... transcriptase. MultiScribe Reverse Transcriptase is similar ... in its recommended usage. MuLV reverse ... polymerase that uses single-stranded RNA as ...
... determination of digitonin and digoxin. Physical form: Lyophilized ... and 0.06% NaCl Preparation Note: Sodium iodide ... Res. Commun., 19, 755 (1965). Unit Definition: ... phosphorus from ATP per min at pH 7.4 ...
... protease from human rhinovirus (HRV 3C) is ... line of restriction grade proteases. The recombinant ... protein, which recognizes the same cleavage site ... 22 KDa size of the protease, optimal ...
... IEC Centra CL3 series is designed ... research and clinical applications at a ... package includes quick connect rotors and ... yet intuitive interface allows you to ...
Biology Products: