Showing 20 articles starting at article 221

< Previous 20 articles        Next 20 articles >

Categories: Anthropology: General, Energy: Nuclear

Return to the site home page

     (via sciencedaily.com)     Original source 

People who carry three gene variants that have been inherited from Neanderthals are more sensitive to some types of pain, according to a new study.

     (via sciencedaily.com)     Original source 

New analysis of the remains of victims of the 1918 influenza pandemic, which killed an estimated 50 million people worldwide, contradicts the widespread belief the flu disproportionately impacted healthy young adults. 

     (via sciencedaily.com)     Original source 

Scientists have found early human migrants left Africa for Eurasia, across the Sinai peninsula and on through Jordan, over 80-thousand years ago. Researchers have proved there was a 'well-watered corridor' which funneled hunter-gatherers through The Levant towards western Asia and northern Arabia via Jordan.

     (via sciencedaily.com)     Original source 

Commercial whaling in the 20th century decimated populations of large whales but also appears to have had a lasting impact on the genetic diversity of today’s surviving whales, new research shows.

     (via sciencedaily.com)     Original source 

It’s long been understood that human settlement contributes to conditions that make Pacific Islands more susceptible to wildfires, such as the devastating Aug. 8 event that destroyed the Maui community of Lahaina. But a new study from fire scientist shows that climate is an undervalued part of the equation.

     (via sciencedaily.com)     Original source 

Recent study sheds new light on the enigmatic early evolution of snakes by examining an unexpected source: their brains. The results emphasize the significance of studying both the soft parts of animals’ bodies and their bones for understanding how animals evolved.

     (via sciencedaily.com)     Original source 

The results of the Chi-Nu physics experiment at Los Alamos National Laboratory have contributed essential, never-before-observed data for enhancing nuclear security applications, understanding criticality safety and designing fast-neutron energy reactors.

     (via sciencedaily.com)     Original source 

Paleontologists discover possible DNA remains in fossil turtle that lived 6 million years ago in Panama, where continents collide.

     (via sciencedaily.com)     Original source 

An international research team has taken a decisive step toward a new generation of atomic clocks. The researchers have created a much more precise pulse generator based on the element scandium, which enables an accuracy of one second in 300 billion years -- that is about a thousand times more precise than the current standard atomic clock based on caesium.

     (via sciencedaily.com)     Original source 

Studying prehistoric production processes of birch bark tar using computational modelling reveals what kinds of cognition were required for the materials produced by Neanderthal and early modern humans.

     (via sciencedaily.com)     Original source 

A new study appearing in Science Advances compares Pleistocene vegetation communities around Lake Baikal in Siberia, Russia, to the oldest archeological traces of Homo sapiens in the region. The researchers use the 'remarkable evidence' to tell a compelling story from 45,000-50,000 years ago with new detail: how the first humans migrated across Europe and Asia.

     (via sciencedaily.com)     Original source 

Using ancestry decomposition techniques an international research team has revealed a deeply divergent ancestry among admixed populations from the Angolan Namib desert. This unique genetic heritage brings the researchers closer to understanding the distribution of genetic variation in the broader region of southern Africa before the spread of food production.

     (via sciencedaily.com)     Original source 

Violence was a consistent part of life among ancient communities of hunter-gatherers, according to a new study that looked for signs of trauma on 10,000-year-old skeletal remains from burial sites in northern Chile.

     (via sciencedaily.com)     Original source 

An international study has documented post-mortem bone modifications not linked to consumption.

     (via sciencedaily.com)     Original source 

A new study suggests patches of fertile soil in the Amazon, known as dark earth, were intentionally produced by ancient Amazonians as a way to improve the soil and sustain large and complex societies.

     (via sciencedaily.com)     Original source 

Half a million years ago, earlier than was previously thought possible, humans were building structures made of wood, according to new research.

     (via sciencedaily.com)     Original source 

A groundbreaking study is reshaping our understanding of crocodile evolution by pinpointing the onset of slow growth rates to the Late Triassic period, much earlier than the previously assumed Early Jurassic timeline. The research highlights newly discovered fossil crocodile ancestors (known as crocodylomorphs) that exhibited slow growth rates, similar to modern-day crocodilians. Intriguingly, these early crocodylomorphs were not the lethargic, semi-aquatic creatures we are familiar with today; they were small, active, and fully terrestrial. The study also suggests that this slow-growth strategy was not a mere evolutionary quirk but a survival mechanism, as only the slow-growing crocodylomorphs managed to survive the End-Triassic mass extinction. This stands in stark contrast to the fast-growing dinosaurs of the same era, setting the stage for the divergent evolutionary paths that would later define their modern descendants.

     (via sciencedaily.com)     Original source 

X-rays of an ancient jawless fish shows earliest-known example of internal cartilage skull, unlike that of any other known vertebrate.

     (via sciencedaily.com)     Original source 

A new study sheds new light on the origins of modern brain cells. Researchers find evidence that specialized secretory cells found in placozoans, tiny sea creatures the size of a grain of sand, have many similarities to the neuron, such as the genes required to create a partial synapse. From an evolutionary point of view, early neurons might have started as something like these cells, eventually gaining the ability to create a complete synapse, form axons and dendrites and create ion channels that generate fast electrical signals -- innovations which gave rise to the neuron in more complex animals such as jellyfish. Though the complete story of how the first neuron appeared remains to be told, the study demonstrates that the basic building blocks for our brain cells were forming in the ancestors of placozoans grazing inconspicuously in the shallow seas of Earth around 800 million years ago.

     (via sciencedaily.com)     Original source 

Researchers discover how molecules in ancient glass rearrange and recombine with minerals over centuries to form a patina of photonic crystals -- ordered arrangements of atoms that filter and reflect light in very specific ways -- an analog of materials used in communications, lasers and solar cells.