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Engineering: Graphene
Published

Researchers discover new process to create freestanding membranes of 'smart' materials      (via sciencedaily.com) 

A team has developed a new method for making nano-membranes of 'smart' materials, which will allow scientists to harness their unique properties for use in devices such as sensors and flexible electronics.

Engineering: Graphene Offbeat: Computers and Math
Published

Human brain organoids implanted into mouse cortex respond to visual stimuli for first time      (via sciencedaily.com) 

A team of engineers and neuroscientists has demonstrated for the first time that human brain organoids implanted in mice have established functional connectivity to the animals' cortex and responded to external sensory stimuli. The implanted organoids reacted to visual stimuli in the same way as surrounding tissues, an observation that researchers were able to make in real time over several months thanks to an innovative experimental setup that combines transparent graphene microelectrode arrays and two-photon imaging.

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.

Physics: Acoustics and Ultrasound
Published

Team writes letters with ultrasonic beam, develops deep learning based real-time ultrasonic hologram generation technology      (via sciencedaily.com) 

A team has developed a 'deep learning-based ultrasound hologram generation framework' technology that can freely configure the form of focused ultrasound in real time based on holograms. It is expected to be used as a basic technology in the field of brain stimulation and treatment that requires precision in the future.

Mathematics: General Mathematics: Modeling Mathematics: Statistics
Published

Modelling the collective movement of bacteria      (via sciencedaily.com) 

A new paper presents a mathematical model for the motion of bacteria that includes cell division and death, the basic ingredients of the cell cycle.

Offbeat: Earth and Climate
Published

When our vertical perception gets distorted: Body pitch and translational body motion      (via sciencedaily.com) 

Taking Hong Kong's famous Peak Tram up to Victoria Peak offers stunning views of its central business district, Victoria Harbor, and the surrounding islands. But a team of international scientists has recently discovered that the trams winding journey provides a previously unrecognized situation where our vertical perception gets distorted.

Geoscience: Severe Weather
Published

Skiing over Christmas holidays no longer guaranteed -- even with snow guns      (via sciencedaily.com)     Original source 

For many people, holidays in the snow are as much a part of the end of the year as Christmas trees and fireworks. As global warming progresses, however, white slopes are becoming increasingly rare. Researchers have calculated how well one of Switzerland's largest ski resorts will remain snow reliable with technical snow-making by the year 2100, and how much water this snow will consume.

Biology: Microbiology Ecology: Endangered Species Ecology: Invasive Species
Published

Ethereal color variant of mysterious plant is actually a new species      (via sciencedaily.com) 

It was thought that there was only one species of the ghost-like Monotropastrum humile plant found in woodlands across East and Southeast Asia. In a major new discovery, botanists reveal that a rosy pink colored variant is actually a distinct new species, shaking up our understanding of this unusual-looking genus of plants. This 20-year study emphasizes the importance of combining various analytical methods to fully understand and protect biodiversity.

Energy: Alternative Fuels
Published

Improving the operational stability of perovskite solar cells      (via sciencedaily.com) 

Scientists have found a way to improve the operational stability of perovskite solar cells, a crucial step towards their commercialization.

Ecology: Invasive Species Environmental: Ecosystems
Published

Slime for the climate, delivered by brown algae      (via sciencedaily.com)     Original source 

Brown algae take up large amounts of carbon dioxide from the air and release parts of the carbon contained therein back into the environment in mucous form. This mucus is hard to break down for other ocean inhabitants, thus the carbon is removed from the atmosphere for a long time, as researchers now show. They reveal that the algal mucus called fucoidan is particularly responsible for this carbon removal and estimate that brown algae could thus remove up to 550 million tons of carbon dioxide from the air every year -- almost the amount of Germany's entire annual greenhouse gas emissions.

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.

Energy: Alternative Fuels Space: The Solar System
Published

The world's largest turbulence simulation unmasks the flow of energy in astrophysical plasmas      (via sciencedaily.com) 

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.

Ecology: Endangered Species
Published

Plants between light and darkness      (via sciencedaily.com) 

How plants optimize photosynthesis under changing light conditions.

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.

Offbeat: Computers and Math
Published

Designing with DNA      (via sciencedaily.com) 

Marvel at the tiny nanoscale structures emerging from labs, and it's easy to imagine you're browsing a catalog of the world's smallest pottery: itty-bitty vases, bowls, and spheres. But instead of making them from clay, the researchers designed these objects out of threadlike molecules of DNA, bent and folded into complex three-dimensional objects. These creations demonstrate the possibilities of a new open-source software program.

Ecology: Endangered Species
Published

Massive 'marimo' algae balls at risk from deadly winter sunburn      (via sciencedaily.com) 

Climate change could overexpose rare underwater 'marimo' algae balls to sunlight, killing them off according to a new study. Marimo are living fluffy balls of green algae. The world's largest marimo can be found in Lake Akan in Hokkaido, Japan's northern main island. Here they are sheltered from too much winter sunlight by a thick layer of ice and snow, but the ice is thinning due to global warming. Researchers found that the algae could survive bright light for up to four hours and would recover if then placed under a moderate light for 30 minutes. However, the algae died when exposed to bright light for six hours or more. The team hopes this discovery will highlight the threat of climate change to this endangered species and the urgent need to protect their habitat.

Ecology: Endangered Species
Published

Polarity proteins shape efficient 'breathing' pores in grasses      (via sciencedaily.com) 

A research group is studying how plants 'breathe'. They have gained new insights into how grasses develop efficient 'breathing pores' on their leaves. If important landmark components in this development process are missing, the gas exchange between plant and atmosphere is impaired. The findings are also important regarding climate change.

Physics: Acoustics and Ultrasound
Published

A type of simple, DIY air filter can be an effective way to filter out indoor air pollutants      (via sciencedaily.com) 

A study found that inexpensive, easy-to-assemble Corsi-Rosenthal boxes can help reduce exposure to indoor air pollutants. The air filters have already been shown to reduce particles carrying the SARS-CoV-2 virus.

Ecology: Trees Environmental: Ecosystems
Published

Rwandan tree carbon stock mapped from above      (via sciencedaily.com)     Original source 

Researchers have developed accurate nation-wide mapping of the carbon content of trees based on aerial images.

Computer Science: Quantum Computers Physics: Quantum Computing
Published

Researchers show a new way to induce useful defects using invisible material properties      (via sciencedaily.com)     Original source 

Much of modern electronic and computing technology is based on one idea: add chemical impurities, or defects, to semiconductors to change their ability to conduct electricity. These altered materials are then combined in different ways to produce the devices that form the basis for digital computing, transistors, and diodes. Indeed, some quantum information technologies are based on a similar principle: adding defects and specific atoms within materials can produce qubits, the fundamental information storage units of quantum computing.