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Categories: Anthropology: General, Energy: Batteries

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Anthropology: General Archaeology: General Geoscience: Geology Paleontology: Climate Paleontology: General
Published

Bering Land Bridge formed surprisingly late during last ice age      (via sciencedaily.com) 

A new study that reconstructs the history of sea level at the Bering Strait shows that the Bering Land Bridge connecting Asia to North America did not emerge until around 35,700 years ago, less than 10,000 years before the height of the last ice age (known as the Last Glacial Maximum). The findings indicate that the growth of the ice sheets -- and the resulting drop in sea level -- occurred surprisingly quickly and much later in the glacial cycle than previous studies had suggested.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Archaeology: General Paleontology: General
Published

Archaeologists uncover oldest known projectile points in the Americas      (via sciencedaily.com) 

Archaeologists have uncovered projectile points in Idaho that are thousands of years older than any previously found in the Americas, helping to fill in the history of how early humans crafted and used stone weapons.

Anthropology: General
Published

Hunter-gatherer social ties spread pottery-making far and wide      (via sciencedaily.com) 

Analysis of more than 1,200 vessels from hunter-gatherer sites has shown that pottery-making techniques spread vast distances over a short period of time through social traditions being passed on.

Energy: Batteries Engineering: Robotics Research
Published

Designing better battery electrolytes      (via sciencedaily.com) 

Scientists give the lay of the land in the quest for electrolytes that could enable revolutionary battery chemistries.

Anthropology: General Archaeology: General Geoscience: Environmental Issues
Published

Drought encouraged Attila's Huns to attack the Roman empire, tree rings suggest      (via sciencedaily.com) 

Hunnic peoples migrated westward across Eurasia, switched between farming and herding, and became violent raiders in response to severe drought in the Danube frontier provinces of the Roman empire, a new study argues.

Anthropology: Early Humans Anthropology: General Offbeat: Paleontology and Archeology
Published

Early humans may have first walked upright in the trees      (via sciencedaily.com) 

Human bipedalism -- walking upright on two legs -- may have evolved in trees, and not on the ground as previously thought, according to a new study.

Energy: Batteries
Published

Ingestible biobatteries could allow new view of digestive system      (via sciencedaily.com) 

A new biobattery could power ingestible cameras in the small intestine.

Energy: Batteries Engineering: Graphene
Published

New life flashed into lithium-ion anodes      (via sciencedaily.com) 

Chemists use flash Joule heating to recover graphite anodes from spent lithium-ion batteries at a cost of about $118 per ton.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Paleontology: Fossils Paleontology: General
Published

Immune system of modern Papuans shaped by DNA from ancient Denisovans, study finds      (via sciencedaily.com) 

Modern Papuans' immune system likely evolved with a little help from the Denisovans, a mysterious human ancestor who interbred with ancient humans, according to a new study.

Anthropology: Early Humans Anthropology: General
Published

How intensive agriculture turned a wild plant into a pervasive weed      (via sciencedaily.com) 

Agriculture is driving rapid evolutionary change, not just on farms but also in wild species in surrounding landscapes, new research has found.

Chemistry: Thermodynamics Energy: Batteries
Published

Flameproofing lithium-ion batteries with salt      (via sciencedaily.com) 

A polymer-based electrolyte makes for batteries that keep working -- and don't catch fire -- when heated to over 140 degrees F.

Anthropology: Cultures Anthropology: General Archaeology: General Environmental: Ecosystems Environmental: Wildfires Paleontology: General
Published

For 400 years, Indigenous tribes buffered climate's impact on wildfires in the American Southwest      (via sciencedaily.com)     Original source 

Devastating megafires are becoming more common, in part, because the planet is warming. But a new study suggests bringing 'good fire' back to the U.S. and other wildfire fire-prone areas, as Native Americans once did, could potentially blunt the role of climate in triggering today's wildfires.

Energy: Batteries
Published

New battery technology has potential to significantly reduce energy storage costs      (via sciencedaily.com) 

Researchers are hoping that a new, low-cost battery which holds four times the energy capacity of lithium-ion batteries and is far cheaper to produce will significantly reduce the cost of transitioning to a decarbonized economy.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Paleontology: Fossils
Published

Jawbone may represent earliest presence of humans in Europe      (via sciencedaily.com) 

For over a century, one of the earliest human fossils ever discovered in Spain has been long considered a Neanderthal. However, new analysis from an international research team dismantles this century-long interpretation, demonstrating that this fossil is not a Neanderthal; rather, it may actually represent the earliest presence of Homo sapiens ever documented in Europe.

Energy: Batteries
Published

X-rays reveal elusive chemistry for better EV batteries      (via sciencedaily.com) 

Scientists used high energy x-rays to investigate the solid-electrolyte interphase, a chemical layer in batteries that's key to stabilizing lithium metal anodes. Chemists unraveled this complex chemical mechanisms that is crucial for boosting energy density.

Energy: Batteries
Published

New manufacturing process produces better, cheaper cathodes for lithium-ion batteries      (via sciencedaily.com) 

Researchers have developed a new method for producing a key component of lithium-ion batteries. The result is a more affordable battery from a faster, less wasteful process that uses less toxic material.

Energy: Batteries
Published

A self-powered ingestible sensor opens new avenues for gut research      (via sciencedaily.com) 

Engineering researchers have developed a battery-free, pill-shaped ingestible biosensing system designed to provide continuous monitoring in the intestinal environment. It gives scientists the ability to monitor gut metabolites in real time, which wasn't possible before. This could unlock a new understanding of intestinal metabolite composition, which significantly impacts human health overall.

Energy: Batteries
Published

Stabilizing lithium-ion batteries with microbially synthesized electrolyte additive      (via sciencedaily.com) 

Lithium-ion batteries with high-energy-density cathodes are necessary to meet the energy demands of next-generation electronics and electric vehicles. At high voltages, however, the battery electrolyte undergoes excessive decomposition, compromising cathode performance. To tackle this, researchers have now synthesized a bio-based, non-toxic additive material that stabilizes the cathode by forming a passivation layer on its surface and suppressing its decomposition. Eco-friendly and low-cost, the novel compound could promote a wider utilization of bio-based resources.

Anthropology: General Archaeology: General Paleontology: Fossils
Published

Ancient DNA from medieval Germany tells the origin story of Ashkenazi Jews      (via sciencedaily.com) 

Extracting ancient DNA from teeth, an international group of scientists peered into the lives of a once-thriving medieval Ashkenazi Jewish community in Erfurt, Germany. The findings show that the Erfurt Jewish community was more genetically diverse than modern day Ashkenazi Jews.