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Categories: Anthropology: Early Humans, Energy: Nuclear
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.
Published Listening to the people results in a more sustainable future energy system
(via sciencedaily.com) By taking into account the demographics and preferences of US racial groups, clarified through a nationally representative survey of 3,000 US residents, researchers have created a 'desirable' electricity generation mix for 2050 that includes 50% more energy from renewables than current projections. Combining such bottom-up input with top-down energy system goals set by policymakers could help meet both the needs and preferences of the population along with emission and climate goals.
Published Ancient DNA clarifies the early history of American colonial horses
(via sciencedaily.com) A newly identified 16th century horse specimen is among the oldest domestic horses from the Americas known to date, and its DNA helps clarify the history of horses in the Western Hemisphere, according to a new study.
Published Early hunting, farming homogenized mammal communities of North America
(via sciencedaily.com) Whether by the spear or the plow, humans have been homogenizing the mammal communities of North America for 10,000-plus years, says a new analysis of 8,831 fossils representing 365 species.
Published Smaller, stronger magnets could improve devices that harness the fusion power of the sun and stars
(via sciencedaily.com) PPPL researchers have found a way to build powerful magnets smaller than before, aiding the design and construction of machines that could help the world harness the power of the sun to create electricity without producing greenhouse gases that contribute to climate change.
Published Chemists unlock secrets of molten salts
(via sciencedaily.com) Researchers have come up with a novel way to study the thermodynamic properties of molten salts, which are used in many nuclear and solar energy applications.
Published Go with the flow: New findings about moving electricity could improve fusion devices
(via sciencedaily.com) Researchers have found that updating a mathematical model to include a physical property known as resistivity could lead to the improved design of doughnut-shaped fusion facilities known as tokamaks.
Published When did the genetic variations that make us human emerge?
(via sciencedaily.com) The study of the genomes of our closest relatives, the Neanderthals and Denisovans, has opened up new research paths that can broaden our understanding of the evolutionary history of Homo sapiens. A new study has made an estimation of the time when some of the genetic variants that characterize our species emerged. It does so by analyzing mutations that are very frequent in modern human populations, but not in these other species of archaic humans.
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.
Published Scientists propose solution to a long-puzzling fusion problem
(via sciencedaily.com) Researchers demonstrate explanation of paradox that could apply to all spherical tokamaks, cost-effective candidates to model a fusion pilot plant.
Published X-rays help researchers piece together treasured cellular gateway
(via sciencedaily.com) After almost two decades of synchrotron experiments, scientists have captured a clear picture of a cell's nuclear pores, which are the doors and windows through which critical material in your body flows in and out of the cell's nucleus. These findings could lead to new treatments of certain cancers, autoimmune diseases and heart conditions.
Published The importance of elders
(via sciencedaily.com) In a new paper, researchers challenge the longstanding view that the force of natural selection in humans must decline to zero once reproduction is complete. They assert that a long post-reproductive lifespan is not just due to recent advancements in health and medicine. The secret to our success? Our grandparents.
Published How placentas evolved in mammals
(via sciencedaily.com) The fossil record tells us about ancient life through the preserved remains of body parts like bones, teeth and turtle shells. But how to study the history of soft tissues and organs, which can decay quickly, leaving little evidence behind? In a new study, scientists use gene expression patterns, called transcriptomics, to investigate the ancient origins of one organ: the placenta, which is vital to pregnancy.
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.
Published Laser creates a miniature magnetosphere
(via sciencedaily.com) A research team realized magnetic reconnection driven by electron dynamics in laser-produced plasmas and measured the pure electron outflows. Their findings will be applied not only to space and astrophysical plasmas, but also to magnetic propulsion and fusion plasmas.
Published Ice Age wolf DNA reveals dogs trace ancestry to two separate wolf populations
(via sciencedaily.com) An international group of geneticists and archaeologists have found that the ancestry of dogs can be traced to at least two populations of ancient wolves. The work moves us a step closer to uncovering the mystery of where dogs underwent domestication, one of the biggest unanswered questions about human prehistory.
Published Fossils in the 'Cradle of Humankind' may be more than a million years older than previously thought
(via sciencedaily.com) For decades, scientists have studied these fossils of early human ancestors and their long-lost relatives. Now, a dating method developed by geologists just pushed the age of some of these fossils found at the site of Sterkfontein Caves back more than a million years. This would make them older than Dinkinesh, also called Lucy, the world's most famous Australopithecus fossil.
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.
Published Many human genomes shaped by past events that caused sharp dips in the population, study finds
(via sciencedaily.com) The genomes of many human populations show evidence of founder events, which occur when a small number of initial members start a new population, and can lead to low genetic diversity as well as increase the risk of certain genetic diseases in the new population.
Published 1,700-year-old Korean genomes show genetic heterogeneity in Three Kingdoms period Gaya
(via sciencedaily.com) Scientists have successfully sequenced and studied the whole genome of eight 1,700-year-old individuals dated to the Three Kingdoms period of Korea (approx. 57 BC-668 AD). The first published genomes from this period in Korea and bring key information for the understanding of Korean population history.