Showing 20 articles starting at article 461

< Previous 20 articles        Next 20 articles >

Categories: Anthropology: General, Energy: Batteries

Return to the site home page

Energy: Batteries Energy: Technology Engineering: Graphene
Published

Recyclable mobile phone batteries a step closer with rust-busting invention      (via sciencedaily.com) 

Mobile phone batteries with a lifetime up to three times longer than today's technology could be a reality thanks to a recent innovation.

Energy: Alternative Fuels Energy: Batteries Energy: Fossil Fuels Geoscience: Environmental Issues
Published

How plants are inspiring new ways to extract value from wastewater      (via sciencedaily.com) 

Scientists are drawing inspiration from plants to develop new techniques to separate and extract valuable minerals, metals and nutrients from resource-rich wastewater.

Anthropology: General Archaeology: General
Published

Agriculture linked to changes in age-independent mortality in North America      (via sciencedaily.com) 

The transition to agriculture from hunting and gathering in pre-colonial North America led to changes in age-independent mortality, or mortality caused by factors that are not associated with age, according to a new study. The team found that the intensification of crop use occurred in two phases, the first of which led to a decline in human age-independent mortality, while the second is associated with a rise in it. The study is the first to tie patterns of age-independent mortality to food production.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Archaeology: General Biology: Evolutionary Paleontology: Fossils
Published

Plague trackers: Researchers cover thousands of years in a quest to understand the elusive origins of the Black Death      (via sciencedaily.com) 

Seeking to better understand more about the origins and movement of bubonic plague, in ancient and contemporary times, researchers have completed a painstaking granular examination of hundreds of modern and ancient genome sequences, creating the largest analysis of its kind.

Anthropology: General Archaeology: General
Published

Violence was widespread in early farming society      (via sciencedaily.com) 

Violence and warfare were widespread in many Neolithic communities across Northwest Europe, a period associated with the adoption of farming, new research suggests. Of the skeletal remains of more than 2300 early farmers from 180 sites dating from around 8000 -- 4000 years ago to, more than one in ten displayed weapon injuries, bioarchaeologists found.

Anthropology: General Archaeology: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Fossils
Published

Mummified crocodiles provide insights into mummy-making over time      (via sciencedaily.com) 

Crocodiles were mummified in a unique way at the Egyptian site of Qubbat al-Hawa during the 5th Century BC, according to a new study.

Anthropology: Cultures Anthropology: General Paleontology: Climate
Published

In the Neanderthal site of Combe-Grenal, France, hunting strategies were unaffected by changing climate      (via sciencedaily.com) 

Neanderthals in Combe-Grenal (France) preferred to hunt in open environments, and their hunting strategies did not alter during periods of climatic change, according to a new study.

Anthropology: General
Published

How the last 12,000 years have shaped what humans are today      (via sciencedaily.com) 

While humans have been evolving for millions of years, the past 12,000 years have been among the most dynamic and impactful for the way we live today, according to an anthropologist.

Anthropology: General Archaeology: General Paleontology: Fossils
Published

Marriage in Minoan Crete      (via sciencedaily.com) 

An international team of researchers achieves completely new insights into Bronze Age marriage rules and family structures in Greece. Analyses of ancient genomes show that the choice of marriage partners was determined by one's own kinship.

Energy: Batteries
Published

Researchers create smaller, cheaper flow batteries for clean energy      (via sciencedaily.com) 

Flow batteries offer a solution. Electrolytes flow through electrochemical cells from storage tanks in this rechargeable battery. The existing flow battery technologies cost more than $200/kilowatt hour and are too expensive for practical application, but engineers have now developed a more compact flow battery cell configuration that reduces the size of the cell by 75%, and correspondingly reduces the size and cost of the entire flow battery. The work could revolutionize how everything from major commercial buildings to residential homes are powered.

Energy: Batteries Engineering: Nanotechnology
Published

Novel design helps develop powerful microbatteries      (via sciencedaily.com) 

Translating electrochemical performance of large format batteries to microscale power sources has been a long-standing technological challenge, limiting the ability of batteries to power microdevices, microrobots and implantable medical devices. Researchers have created a high-voltage microbattery (> 9 V), with high-energy and -power density, unparalleled by any existing battery design.

Anthropology: Cultures Anthropology: General Archaeology: General Offbeat: Paleontology and Archeology
Published

Ancient Siberian genomes reveal genetic backflow from North America across the Bering Sea      (via sciencedaily.com) 

The movement of people across the Bering Sea from North Asia to North America is a well-known phenomenon in early human history. Nevertheless, the genetic makeup of the  people who lived in North Asia during this time has remained mysterious due to a limited number of ancient genomes analyzed from this region. Now, researchers describe genomes from ten individuals up to 7,500 years old that help to fill the gap and show geneflow from people moving in the opposite direction from North America to North Asia.

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

Ethical ancient DNA research must involve descendant communities, say researchers      (via sciencedaily.com) 

The analysis of ancient DNA allows scientists to trace human evolution and make important discoveries about modern populations. The data revealed by ancient DNA sampling can be valuable, but the human remains that carry this ancient DNA are often those of the ancestors of modern Indigenous groups, and some communities have expressed concerns about the ethics of sampling by outside parties. A group of scientists make the case for involvement of descendant communities in all aspects of the research process.

Energy: Batteries
Published

New battery could prevent post-hurricane electric vehicle fires      (via sciencedaily.com) 

A researcher has developed technology that could prevent electric vehicle fires, like those caused by saltwater flooding from Hurricane Ian. The technology, an aqueous battery, replaces the volatile and highly flammable organic solvents found in electric vehicle lithium-ion batteries with saltwater to create a battery that is safer, faster charging, just as powerful and won't short circuit during flooding.

Anthropology: Early Humans Anthropology: General Archaeology: General Biology: Evolutionary Paleontology: Fossils
Published

Smallpox has plagued humans since ancient Egyptian times, new evidence confirms      (via sciencedaily.com)     Original source 

Smallpox was once one of humanity's most devastating diseases, but its origin is shrouded in mystery. For years, scientific estimates of when the smallpox virus first emerged have been at odds with historical records. Now, a new study reveals that the virus dates back 2,000 years further than scientists have previously shown, verifying historical sources and confirming for the first time that the disease has plagued human societies since ancient times.

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

Study reveals average age at conception for men versus women over past 250,000 years      (via sciencedaily.com) 

Using a new method based upon comparing DNA mutation rates between parents and offspring, evolutionary biologists have revealed the average age of mothers versus fathers over the past 250,000 years, including the discovery that the age gap is shrinking, with women's average age at conception increasing from 23.2 years to 26.4 years, on average, in the past 5,000 years.

Energy: Batteries
Published

Lithium-sulfur batteries are one step closer to powering the future      (via sciencedaily.com) 

A research team has built and tested a new interlayer to prevent dissolution of the sulfur cathode in lithium-sulfur batteries. This new interlayer increases Li-S cell capacity and maintains it over hundreds of cycles.

Anthropology: General Archaeology: General Offbeat: Paleontology and Archeology
Published

DNA from archaeological remains shows that immigration to Scandinavia was exceptional during the Viking period      (via sciencedaily.com) 

A new study based on 297 ancient Scandinavian genomes analysed together with the genomic data of 16,638 present day Scandinavians resolve the complex relations between geography, ancestry, and gene flow in Scandinavia -- encompassing the Roman Age, the Viking Age and later periods. A surprising increase of variation during the Viking period indicates that gene flow into Scandinavia was especially intense during this period.

Energy: Batteries
Published

Efficient sodium-ion battery anode for energy storage      (via sciencedaily.com) 

Lithium is expensive and limited, necessitating the development of efficient energy storage systems beyond lithium-ion batteries. Sodium is a promising candidate. However, sodium ions, being large and sluggish, hamper sodium-ion battery (SIB) anode performance. Researchers have recently developed pyrolyzed quinacridones, new carbonaceous SIB anode materials, that are efficient, easily prepared, and exhibit excellent electrochemical properties, including high sodium-ion storage performance and cycling stability.

Energy: Batteries
Published

Development of next-generation solid electrolyte technology, 'stable' even when exposed to the atmosphere      (via sciencedaily.com) 

Engineers have announced the development of solid electrolytes with enhanced atmospheric stability.