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Categories: Archaeology: General, Energy: Technology
Published Ancient DNA reveals diverse community in 'Lost City of the Incas'
(via sciencedaily.com) Original source DNA analysis of 34 individuals buried at Machu Picchu revealed that many traveled alone from throughout the Inca Empire.
Published Family trees from the European Neolithic
(via sciencedaily.com) Original source The Neolithic burial site of Gurgy 'les Noisats' in France revealed two unprecedentedly large family trees which allowed a Franco-German team to explore the social organization of the 6,700-year-old community. Based on multiple lines of evidence, the team describes a close kin group which practiced monogamy and female exogamy, and experienced generally stable times.
Published Missing island explains how endemic species on the Miyako Islands emerged
(via sciencedaily.com) Original source Miyako Islands are home to various native species of snake and lizards. How these species came to call these islands home has long puzzled scientists. A group of researchers have compiled the latest geological and biological data, proposing that an island once facilitated migration between Okinawa and Miyako Islands.
Published A butterfly's first flight inspires a new way to produce force and electricity
(via sciencedaily.com) Original source Researchers have uncovered the promising capability of chitin as a sustainable smart biomaterial. Through water exchange with the environment, humidity-responsive chitinous films can generate mechanical and electrical energy for potential use in engineering and biomedical applications.
Published 'Quantum avalanche' explains how nonconductors turn into conductors
(via sciencedaily.com) Original source The study takes a new approach to answer a long-standing mystery about insulator-to-metal transitions.
Published Renewable solar energy can help purify water, the environment
(via sciencedaily.com) Chemists have demonstrated that water remediation can be powered in part -- and perhaps even exclusively -- by renewable energy sources.
Published Device makes hydrogen from sunlight with record efficiency
(via sciencedaily.com) Engineers have created a device that turns sunlight into hydrogen with record-breaking efficiency by integrating next-generation halide perovskite semiconductors with electrocatalysts in a single, durable, cost-effective and scalable device.
Published Aluminum materials show promising performance for safer, cheaper, more powerful batteries
(via sciencedaily.com) Researchers are using aluminum foil to create batteries with higher energy density and greater stability. The team's new battery system could enable electric vehicles to run longer on a single charge and would be cheaper to manufacture -- all while having a positive impact on the environment.
Published Researchers put a new twist on graphite
(via sciencedaily.com) Original source Researchers report that it is possible to imbue graphite -- the bulk, 3D material found in No. 2 pencils -- with physical properties similar to graphite's 2D counterpart, graphene. Not only was this breakthrough unexpected, the team also believes its approach could be used to test whether similar types of bulk materials can also take on 2D-like properties. If so, 2D sheets won't be the only source for scientists to fuel technological revolutions. Bulk, 3D materials could be just as useful.
Published Dry manufacturing process offers path to cleaner, more affordable high-energy EV batteries
(via sciencedaily.com) Early experiments have revealed significant benefits to a dry battery manufacturing process. This eliminates the use of toxic solvents while showing promise for delivering a battery that is durable, less weighed down by inactive elements and able to maintain high energy storage capacity after use. Such improvements could boost wider EV adoption, helping to reduce carbon emissions and achieve U.S. climate goals.
Published Researchers achieve historic milestone in energy capacity of supercapacitors
(via sciencedaily.com) Original source In a new landmark chemistry study, researchers describe how they have achieved the highest level of energy storage -- also known as capacitance -- in a supercapacitor ever recorded.
Published Bifacial perovskite solar cells point to higher efficiency
(via sciencedaily.com) A bifacial perovskite solar cell, which allows sunlight to reach both sides of the device, holds the potential to produce higher energy yields at lower overall costs.
Published Picky green sea turtle has travelled to the same place to eat for generations
(via sciencedaily.com) Original source For approximately 3,000 years, generations of green sea turtles have returned to the same seagrass meadows to eat. The fact that this stretches over many generations highlights the importance of protecting seagrass meadows along the coasts of North Africa.
Published Hidden details of Egyptian paintings revealed by chemical imaging
(via sciencedaily.com) Original source Portable chemical imaging technology can reveal hidden details in ancient Egyptian paintings, according to new research.
Published Study examines centuries of identity lost because of slavery
(via sciencedaily.com) Original source Using computational methods informed by genetic data, researchers estimate that a random African American born between 1960 and 1965 is descended from, on average, 314 African and 51 European ancestors reaching back to 1619.
Published Giant stone artefacts found on rare Ice Age site in Kent, UK
(via sciencedaily.com) Original source Researchers have discovered some of the largest early prehistoric stone tools in Britain.
Published Don't wait, desalinate: A new approach to water purification
(via sciencedaily.com) Original source A water purification system separates out salt and other unnecessary particles with an electrified version of dialysis. Successfully applied to wastewater with planned expansion into rivers and seas, the method saves money and saps 90% less energy than its counterparts.
Published Towards efficient lithium--air batteries with solution plasma-based synthesis of perovskite hydroxide catalysts
(via sciencedaily.com) Original source CoSn(OH)6 (CSO) is an effective oxygen evolution reaction (OER) catalyst, necessary for developing next-generation lithium -- air batteries. However, current methods of synthesizing CSO are complicated and slow. Recently, an international research team synthesized CSO in a single step within 20 minutes using solution plasma to generate CSO nanocrystals with excellent OER catalytic properties. Their findings could boost the manufacturing of high energy density batteries.
Published Lessons in sustainability, evolution and human adaptation -- courtesy of the Holocene
(via sciencedaily.com) Original source The El Gigante rockshelter in western Honduras is among only a handful of archaeological sites in the Americas that contain well-preserved botanical remains spanning the last 11,000 years. Considered one of the most important archaeological sites discovered in Central America in the last 40 years, El Gigante was recently nominated as a UNESCO World Heritage site.
Published Perovskite solar cells set new record for power conversion efficiency
(via sciencedaily.com) Original source Perovskite solar cells have attained now attained the extremely high efficiency rate of 24.35% with an active area of 1 cm2. This ground-breaking achievement in maximizing power generation from next-generation renewable energy sources will be crucial to securing the world's energy future.