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Tag: "dating" at biology news

Putting feelings into words produces therapeutic effects in the brain

...lsewhere, originates from early Buddhist teachings dating back some 2,500 years, said David Creswell, a research scientist with the Cousins Center for Psychoneuroimmunology at the Semel Institute for Neuroscience and Human Behavior at UCLA. Mindfulness is a technique in which one pays attention to his o...

Definitive evidence found of a swimming dinosaur

...or its abundance of terrestrial dinosaur trackways dating from the early Cretaceous 125 million years ago. The team's findings are reported in the June issue of GEOLOGY, published by the Geological Society of America. The trackway consists of 6 asymmetrical pairs of 2-3 scratch marks each. Each set of sc...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

... at the primitive root of the green plant lineage, dating back nearly 1.5 billion years. Today, these microscopic, free-living creatures, among the smallest eukaryotes ever characterized, barely a micron in diameter, contribute to a significant share of the world’s total photosynthetic activity. These "pic...

Egyptians, not Greeks were true fathers of medicine

Scientists examining documents dating back 3,500 years say they have found proof that the origins of modern medicine lie in ancient Egypt and not with Hippocrates and the Greeks. The research team from the KNH Centre for Biomedical Egyptology at The University of Manchester discovered t...

Hofmeyr skull supports the 'Out of Africa' theory

...e became apparent only recently. A new approach to dating developed by Grine team member Richard Bailey and his colleagues at Oxford University allowed them to determined its age at just over 36,000 years ago by measuring the amount of radiation that had been absorbed by sand grains that filled the inside o...

40,000-year-old skull shows both modern human and Neandertal traits

...fessor Zilhao between 2003 and 2005. Radiocarbon dating of the specimen produced only a minimum age (more than 35,000 years), but similarity in morphological traits with the Oase 1 human mandible ?found in 2002 on the surface of the cave, adjacent to the excavation area, and dated to about 40,500 years ag...

Mystery of fossilized trees is solved

...und evidence of the Earth's earliest forest trees, dating back 385 million years. Upright stumps of fossilised trees were uncovered after a flash flood in Gilboa, upstate New York, more than a century ago. However, until now, no-one has known what the entire trees looked like. Two years ago, two fossils...

ASU researchers test antibacterial effects of healing clays

...vory Coast? The scientific equivalent of an online dating or matchmaking service: "I answered a posting on the Clay Mineral Society's list serve placed by Thierry Brunet de Courssou. He was asking to have someone take high resolution scanning electron micrographs of the clays," Williams explains. "I confess...

Good times ahead for dinosaur hunters, according to U of Penn scientist's dinosaur census

... the rocks are of the right age to contain fossils dating back to the dinosaur era. At some point, paleontologists will find all the fossils that could possibly be found. Dodson and Wang's analysis also offers evidence that dinosaur populations were stable before the extinction event that ended their reig...

Ancient ape ruled out of man's ancestral line

...agmite layers which provided the materials for the dating process. Australopithecus walked on two legs, but stood just 130cm tall and had a brain comparable in size with a modern chimpanzee. As Dr Walker explained: “In many of these finds, the smallest bones have disintegrated, but here the feet and hand...

Man may have caused pre-historic extinctions

... researchers have discovered that uncertainties in dating fossil remains and the incompleteness of fossil re...help resolve the inherent problems associated with dating fossils from the Pleistocene period. The aim is to provide a far more accurate timetable for the ext...

UCLA scientists strengthen case for life more than 3.8 billion years ago

...as come up positive." One of the key methods for dating the rocks is by carefully analyzing cross-cutting intrusions made by igneous rocks, Manning said, adding, "Whatever is cross-cut must be older than that which is doing the cross-cutting. We went there to find these cross-cutting relationships, which ...

'Scent of a woman' tells male redback spiders to find a mate

...elti) that give these guys an edge in their deadly dating game. The study in the April 4 issue of Current Biology reports that males develop faster based on the population density of males and females around them -- the first time such a phenomenon has been shown in any animal. "It shows that males are rea...

Amber reveals ecology of 30 million year old spiders

...evealed new insights into the ecologies of spiders dating back to the Cenozoic period. It is the first time ancient spiders from different parts of the world have been compared on such a large scale. 671 species of spiders were compared in the study which is published in the March issue of the Royal Societ...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...ou Van Guelpen and Gerhard Pohle, mined literature dating back 100 years for species records and assured that the list is presented using standard species classifications. Though still in preliminary form, the register is a tremendously useful resource to investigators of biodiversity in the Gulf of Maine....

New Rotavirus vaccine joins routine infant immunization schedule

...are co-inventors of the vaccine, based on research dating to 1980. Meeting today in Atlanta, the Advisory Committee on Immunization Practices (ACIP), an expert panel selected by the U.S. Department of Health and Human Services, added the new RotaTeq vaccine, manufactured by Merck & Co., Inc., to its li...

Alleged 40,000-year-old human footprints in Mexico much, much older than thought

..., is one of the world's preeminent anthropological dating laboratories. Paleoanthropologist Tim White, prof...nne well, frequently collaborating with him in the dating of million-year-old sediments in an area of Ethiopia where White has excavated numerous fossils of h...

'Dating agency' boosts hunt for disease genes

...what we've done is to create a sort of scientists' dating agency and shop," explains the Director of the Network's archive, Dr Martin Yuille (University of Manchester). "Vetted scientists can find on the website both data and materials about a disease. Then, they can 'date' a collaborator, design an experim...

Amazon trees much older than assumed, raising questions on global climate impact of region

...orld's largest tropical region. Using radiocarbon dating methods, the team, which includes UC Irvine's Susan Trumbore, found that up to half of all trees greater than 10 centimeters in diameter are more than 300 years old. Some of the trees, Trumbore said, are as much as 750 to 1,000 years old. Study resul...

Ancient humans brought bottle gourds to the Americas from Asia

...t was domesticated for food purposes. Radiocarbon dating indicates that bottle gourds were present in the Americas by 10,000 years ago and widespread by 8,000 years ago. Some of the specimens studied by the team were not only the oldest bottle gourds ever found but also quite possibly the oldest plant DNA ...

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