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Categories: Anthropology: Cultures, Energy: Alternative Fuels
Published More links aren't necessarily better for hybrid nanomaterials


Chemists have discovered more isn't always better when it comes to packing charge-acceptor molecules on the surface of semiconducting nanocrystals.
Published Cheap, sustainable hydrogen through solar power


A new kind of solar panel has achieved 9% efficiency in converting water into hydrogen and oxygen--mimicking a crucial step in natural photosynthesis. Outdoors, it represents a major leap in the technology, nearly 10 times more efficient than solar water-splitting experiments of its kind.
Published A step towards solar fuels out of thin air


Chemical engineers have invented a solar-powered artificial leaf, built on a novel electrode which is transparent and porous, capable of harvesting water from the air for conversion into hydrogen fuel. The semiconductor-based technology is scalable and easy to prepare.
Published Space solar power technology demo launched into orbit


The launch represents the first in-situ test of the technology to harvest solar energy in space and transmit it to Earth.
Published Improving the operational stability of perovskite solar cells


Scientists have found a way to improve the operational stability of perovskite solar cells, a crucial step towards their commercialization.
Published The world's largest turbulence simulation unmasks the flow of energy in astrophysical plasmas


Researchers uncover the long-hidden process that helps explain why the Sun's corona can be vastly hotter than the solar surface that emits it.
Published Archaeologists uncover oldest known projectile points in the Americas


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.
Published New study models the transmission of foreshock waves towards Earth


As the supersonic solar wind surges towards Earth, its interaction with our planet's magnetic field creates a shock to deflect its flow, and a foreshock filled with electromagnetic waves. How these waves can propagate to the other side of the shock has long remained a mystery.
Published Scientists discover a novel photophysical mechanism that has achieved record-breaking efficiency for organic photovoltaics


Organic photovoltaics (OPVs) are a promising, economical, next-generation solar cell technology for scalable clean energy and wearable electronics. But the energy conversion loss due to the recombination of photogenerated charge carriers in OPVs has hindered further enhancement of their power conversion efficiency (PCE). Recently, researchers from City University of Hong Kong (CityU) overcame this obstacle by inventing a novel device-engineering strategy to successfully suppress the energy conversion loss, resulting in record-breaking efficiency.
Published Ammonium is the secret ingredient in stable, efficient, scalable perovskite solar cells


A new pathway to creating durable, efficient perovskite photovoltaics at industrial scale has been demonstrated through the first effective use of lead acetate as a precursor in making formamidinium-caesium perovskite solar cells.
Published Tandem solar cell achieves 32.5 percent efficiency


Researchers report a new world record for tandem solar cells consisting of a silicon bottom cell and a perovskite top cell. The new tandem solar cell converts 32.5 percent of the incident solar radiation into electrical energy.
Published Catalyzing 'net-zero' green hydrogen from the sun


Researchers have discovered an important in-situ protonation process that the photodynamics and separation of charge carriers in a photocatalyst, leading to efficient hydrogen generation from water using visible solar light. The process is enabled in an interstitial phosphorus doped carbon nitride structure, with only earth-abundant non-metallic elements, for its cost-effectiveness and high potential for practical applications.
Published Increasing forest cover in the Eifel region 11,000 years ago resulted in the local loss of megafauna


Sediment cores obtained from Eifel maar sites provide insight into the presence of large Ice Age mammals in Central Europe over the past 60,000 years: Overkill hypothesis not confirmed. Herds of megafauna, such as mammoth and bison, have roamed the prehistoric plains in what is today's Central Europe for several tens of thousands of years. As woodland expanded at the end of the last Ice Age, the numbers of these animals declined and by roughly 11,000 years ago, they had completely vanished from this region. Thus, the growth of forests was the main factor that determined the extinction of such megafauna in Central Europe.
Published Producing 'green' energy -- literally -- from living plant 'bio-solar cells'


Though plants can serve as a source of food, oxygen and décor, they're not often considered to be a good source of electricity. But by collecting electrons naturally transported within plant cells, scientists can generate electricity as part of a 'green,' biological solar cell. Now, researchers have used a succulent plant to create a living 'bio-solar cell' that runs on photosynthesis.
Published Good vibrations turbo charge green hydrogen production


Engineers have used sound waves to boost production of green hydrogen by 14 times, through electrolysis to split water.
Published Paper-thin solar cell can turn any surface into a power source


MIT researchers developed a scalable fabrication technique to produce ultrathin, flexible, durable, lightweight solar cells that can be stuck to any surface. Glued to high-strength fabric, the solar cells are only one-hundredth the weight of conventional cells while producing about 18 times more power-per-kilogram.
Published Immune system of modern Papuans shaped by DNA from ancient Denisovans, study finds


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.
Published Economical eco-friendly fabrication of high efficiency chalcopyrite solar cells


Clean, sustainable energy solutions are essential to meet the ever-increasing energy demands of the human population. High efficiency solar cells are promising candidates to reduce carbon emissions and achieve carbon neutrality. In this regard, solution-processed copper indium gallium sulfur diselenide solar cells (CIGSSe) solar cells have generated significant interest owing to their excellent photovoltaic properties, such as high absorption of visible light, stability, and tunable bandgap. However, large scale, practical applications are limited by a two-fold challenge.
Published Ancient stone tools from China provide earliest evidence of rice harvesting


A new study analyzing stone tools from southern China provides the earliest evidence of rice harvesting, dating to as early as 10,000 years ago. The researchers identified two methods of harvesting rice, which helped initiate rice domestication.
Published For 400 years, Indigenous tribes buffered climate's impact on wildfires in the American Southwest



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.