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Categories: Anthropology: Cultures, Mathematics: Statistics

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Anthropology: Cultures Anthropology: Early Humans
Published

Modern humans generate more brain neurons than Neanderthals      (via sciencedaily.com) 

The question of what makes modern humans unique has long been a driving force for researchers. Comparisons with our closest relatives, the Neanderthals, therefore provide fascinating insights. The increase in brain size, and in neuron production during brain development, are considered to be major factors for the increased cognitive abilities that occurred during human evolution. However, while both Neanderthals and modern humans develop brains of similar size, very little is known about whether modern human and Neanderthal brains may have differed in terms of their neuron production during development. Researchers now show that the modern human variant of the protein TKTL1, which differs by only a single amino acid from the Neanderthal variant, increases one type of brain progenitor cells, called basal radial glia, in the modern human brain.

Anthropology: Cultures Archaeology: General
Published

The Southern Arc and its lively genetic history      (via sciencedaily.com) 

A vast paleogenetic study reveals insights on migration patterns, the expansion of farming and language development from the Caucasus over western Asia and Southern Europe from the early Copper Age until the late middle ages.

Anthropology: Cultures Archaeology: General
Published

Analysis of everyday tools challenges long-held ideas about what drove major changes in ancient Greek society      (via sciencedaily.com) 

A modern scientific analysis of ancient stone tools is challenging long-held beliefs about what caused radical change on the island of Crete, where the first European state flourished during the Bronze Age: the 'Minoan civilization.'

Anthropology: Cultures Anthropology: Early Humans
Published

Study of ancient skulls sheds light on human interbreeding with Neanderthals      (via sciencedaily.com) 

Research has established that there are traces of Neandertal DNA in the genome of modern humans. Now an exploratory study that assessed the facial structure of prehistoric skulls is offering new insights, and supports the hypothesis that much of this interbreeding took place in the Near East -- the region ranging from North Africa to Iraq.

Anthropology: Cultures
Published

Wood sharpens stone: Boomerangs used to retouch lithic tools      (via sciencedaily.com) 

A new study into the multipurpose uses of boomerangs has highlighted the hardwood objects were used to shape the edges of stone tools used by Australian Indigenous communities.  The research demonstrated how boomerangs could function as lithic (or stone) tool retouchers by investigating the use-wear generated on the boomerangs' surfaces during retouching activities. It was found that these use-wear impacts on boomerangs comparable to those observed on Paleolithic bone retouching tools, which date back to more than 200,000 years ago.

Anthropology: Cultures Anthropology: Early Humans
Published

Taking your time makes a difference      (via sciencedaily.com) 

Researchers find that stem cells in the developing brain of modern humans take longer to divide and make fewer errors when distributing their chromosomes to their daughter cells, compared to those of Neanderthals.

Anthropology: Cultures Archaeology: General
Published

High-status Danish Vikings wore exotic beaver furs      (via sciencedaily.com) 

Beaver fur was a symbol of wealth and an important trade item in 10th Century Denmark, according to a new study.

Mathematics: Statistics
Published

Idea of ice age 'species pump' in the Philippines boosted by new way of drawing evolutionary trees      (via sciencedaily.com) 

A groundbreaking Bayesian method and new statistical analyses of genomic data from geckos in the Philippines shows that during the ice ages, the timing of gecko diversification gives strong statistical support for the first time to the Pleistocene aggregate island complex (PAIC) model of diversification, or 'species pump.'

Anthropology: Cultures Anthropology: Early Humans Archaeology: General
Published

DNA from ancient population in Southern China suggests Native Americans' East Asian roots      (via sciencedaily.com) 

For the first time, researchers successfully sequenced the genome of ancient human fossils from the Late Pleistocene in southern China. The data suggests that the mysterious hominin belonged to an extinct maternal branch of modern humans that might have contributed to the origin of Native Americans.

Anthropology: Cultures Anthropology: Early Humans
Published

New genetic research on remote Pacific islands yields surprising findings on world's earliest seafarers      (via sciencedaily.com) 

New genetic research from remote islands in the Pacific offers fresh insights into the ancestry and culture of the world's earliest seafarers, including family structure, social customs, and the ancestral populations of the people living there today.

Anthropology: Cultures Anthropology: Early Humans Archaeology: General
Published

The heat is on: Traces of fire uncovered dating back at least 800,000 years      (via sciencedaily.com)     Original source 

Scientists reveal an advanced, innovative method that they have developed and used to detect nonvisual traces of fire dating back at least 800,000 years -- one of the earliest known pieces of evidence for the use of fire. The newly developed technique may provide a push toward a more scientific, data-driven type of archaeology, but -- perhaps more importantly -- it could help us better understand the origins of the human story, our most basic traditions and our experimental and innovative nature.

Mathematics: Statistics
Published

Topology and machine learning reveal hidden relationship in amorphous silicon      (via sciencedaily.com) 

Fine-tuning the thermal conductivity of amorphous silicon used in technologies such as solar cells and image sensors should become much easier thanks to the computational topology and machine-learning-assisted discovery of the relationship between nano-scale structures and physical properties.

Anthropology: Cultures
Published

Developmental dyslexia essential to human adaptive success      (via sciencedaily.com)     Original source 

Researchers say people with developmental dyslexia have specific strengths relating to exploring the unknown that have contributed to the successful adaptation and survival of our species.

Mathematics: Statistics
Published

When quan­tum par­ti­cles fly like bees      (via sciencedaily.com) 

A quantum system with only 51 charged atoms can take on more than two quadrillion different states. Calculating the system's behavior is child's play for a quantum simulator. But verifying the result is almost impossible, even with today's supercomputers. A research team has now shown how these systems can be verified using equations formulated in the 18th century.

Mathematics: Statistics
Published

One particle on two paths: Quantum physics is right      (via sciencedaily.com) 

The famous double slit experiment shows that particles can travel on two paths at the same time -- but only by looking at a lot of particles and analysing the results statistically. Now a two-path-interference experiment has been designed that only has to measure one specific particle to prove that it travelled on two paths.

Geoscience: Environmental Issues Mathematics: Statistics
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Exposure assessment for Deepwater Horizon oil spill: Health outcomes      (via sciencedaily.com) 

Mathematicians have developed statistical methods that lay the framework for the crucial first step of determining whether there are any linkages between exposures and health outcomes from the 2010 Deepwater Horizon oil spill, which is considered the largest marine oil spill in the history of the U.S.

Mathematics: Statistics
Published

Machine learning model could better measure baseball players' performance      (via sciencedaily.com) 

Researchers have developed a machine learning model that could better measure baseball players' and teams' short- and long-term performance, compared to existing statistical analysis methods for the sport. Drawing on recent advances in natural language processing and computer vision, their approach would completely change, and could enhance, the way the state of a game and a player's impact on the game is measured.

Mathematics: Statistics
Published

Study shows gaps in how STEM organizations collect demographic information      (via sciencedaily.com) 

Professional organizations in science, technology, engineering and mathematics (STEM) fields could more effectively collect data on underrepresented groups in their fields, according to a new survey. With more robust information, STEM organizations could better target efforts to recruit and retain a more diverse membership.

Mathematics: Statistics
Published

Lottery luck in the light of physics: Researchers present theory on the dynamics of many-particle systems      (via sciencedaily.com) 

Power functional theory is a new approach that makes it possible to describe precisely the dynamics of many-particle systems over time.

Mathematics: Statistics
Published

Speaking from the heart: Could your voice reveal your heart health?      (via sciencedaily.com) 

An artificial intelligence (AI)-based computer algorithm accurately predicted a person's likelihood of suffering heart problems related to clogged arteries based on voice recordings alone.