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Archive for the ‘sustainability’ category: Page 3

Dec 10, 2024

Shape-changing device helps visually impaired people perform location task as well as sighted people

Posted by in categories: chemistry, economics, energy, sustainability

Water electrolysis is a cornerstone of global sustainable and renewable energy systems, facilitating the production of hydrogen fuel. This clean and versatile energy carrier can be utilized in various applications, such as chemical CO2 conversion, and electricity generation. Utilizing renewable energy sources such as solar and wind to power the electrolysis process may help reduce carbon emissions and promote the transition to a low-carbon economy.

The development of efficient and stable anode materials for the Oxygen Evolution Reaction (OER) is essential for advancing Proton Exchange Membrane (PEM) water electrolysis technology. OER is a key electrochemical reaction that generates oxygen gas (O₂) from water (H₂O) or hydroxide ions (OH⁻) during water splitting.

This seemingly simple reaction is crucial in energy conversion technologies like as it is hard to efficiently realize and a concurrent process to the wanted hydrogen production. Iridium (Ir)-based materials, particularly amorphous hydrous oxide (am-hydr-IrOx), are at the forefront of this research due to their high activity. However, their application is limited by high dissolution rates of the precious iridium.

Dec 10, 2024

Generating plausible crystal structures from composition

Posted by in categories: particle physics, robotics/AI, solar power, sustainability

Researchers at the University of Reading and University College London have developed a new artificial intelligence model that can predict how atoms arrange themselves in crystal structures. Called CrystaLLM, the technology works similarly to AI chatbots, by learning the “language” of crystals by studying millions of existing crystal structures. It could lead to faster discovery of new materials for everything from solar panels to computer chips.

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Dec 10, 2024

New foam filter achieves high microplastic removal rates in initial testing

Posted by in categories: engineering, food, sustainability

Wuhan University-led research is reporting the development of a revivable self-assembled supramolecular biomass fibrous framework (a novel foam filter) that efficiently removes microplastics from complex aquatic environments.

Plastic waste is a growing global concern due to significant levels of microplastic pollution circulating in soil and waterways and accumulating in the environment, food webs and human tissues. There are no conventional methods for removing microplastics, and developing strategies to handle diverse particle sizes and chemistries is an engineering challenge.

Researchers have been looking for affordable, capable of universal microplastic adsorption. Most existing approaches involve expensive or difficult-to-recover adsorbents, fail under certain environmental conditions, or only target a narrow range of microplastic types.

Dec 9, 2024

‘Climatopias’: Researchers evaluate effectiveness of climate-inspired urban designs

Posted by in categories: climatology, sustainability

A pair of new studies by scientists at the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science and the School of Architecture, shed new light on the potential of climate-inspired architectural and urban design proposals, termed “climatopias,” to effectively address climate change challenges. These studies analyze both specific high-profile projects and a broader range of proposals, providing valuable frameworks for evaluating their effectiveness, feasibility, and social justice implications.

The first paper focuses on a detailed analysis of four prominent climatopic design projects. Utilizing a novel evaluation approach, the researchers assessed each project on its effectiveness, justice, and feasibility.

Key findings indicate that for climatopias to serve as viable climate solutions, they must prioritize their embodied , feature affordable and participatory designs, and possess the potential for actual implementation or stimulate critical discourse around decarbonization and adaptation strategies, enriching in climate resilience. The findings are published in the journal One Earth.

Dec 9, 2024

A new biodegradable material to replace certain microplastics

Posted by in categories: food, sustainability

Microplastics are an environmental hazard found nearly everywhere on Earth, released by the breakdown of tires, clothing, and plastic packaging. Another significant source of microplastics is tiny beads that are added to some cleansers, cosmetics, and other beauty products.

In an effort to cut off some of these microplastics at their source, MIT researchers have developed a class of biodegradable materials that could replace the plastic beads now used in beauty products. These polymers break down into harmless sugars and amino acids.


MIT researchers developed biodegradable materials that could replace the plastic microbeads now used in beauty products. The materials could also be used to encapsulate nutrients for food fortification.

Continue reading “A new biodegradable material to replace certain microplastics” »

Dec 9, 2024

That Time A Particle Accelerator Helped Discover The Lost Works Of Archimedes

Posted by in categories: mathematics, particle physics, sustainability

It was 1,229 CE in the monastery of St Sabas, near Jerusalem, and a monk named Johannes Myronas was in need of some parchment. He had evidently been tasked with creating a copy of the Euchologion – an important book of prayer and worship directions for Eastern Orthodox and Byzantine Catholic churches.

The problem was, parchment was expensive and hard to come by. Recycling was the name of the game, and Johannes had just the thing: a 200-year-old manuscript filled with old math notes that nobody was all that interested in anymore. Compared with the Holy Word, there was no contest: he pulled it apart, scraped the old text off, and used the pages for the new book – a technique known as palimpsesting.

You probably know where this is going. In creating his Euchologion, Johannes had – presumably unwittingly – destroyed one of the most valuable relics of Archimedes’s work. Not just some notebook or single treatise, even: the manuscript now known as “Codex C” contained multiple works from the ancient polymath, some of which now exist nowhere else in the world.

Dec 9, 2024

Battery breakthrough extends EV range to over 3,000 miles on a single charge

Posted by in categories: energy, sustainability, transportation

In the fast-paced world of electric vehicles (EVs), a major breakthrough in battery technology is set to significantly enhance energy storage capacity. This development arrives at a crucial moment, as the EV industry is experiencing rapid growth, making it an ideal time for such a transformative advancement.

Researchers at Pohang University of Science & Technology (POSTECH) have introduced a revolutionary technique that can amplify the energy storage capacity of batteries by an astonishing tenfold. This leap forward not only propels battery technology to new heights but also has the potential to reshape the entire landscape of electric vehicles.

The key to understanding battery function lies in the anode, the component responsible for storing power during charging and then releasing it when the battery is in use. In most modern lithium batteries, graphite is the predominant material used for anodes.

Dec 9, 2024

How Technological Advancements And Environmental Imperatives Are Changing The Auto Industry

Posted by in categories: particle physics, sustainability, transportation

The larger challenge for hydrogen is sourcing it from green suppliers. Electrolyzers are used to harvest green hydrogen by splitting water into its component atoms. For the hydrogen to be green it has to either come from natural-occurring sources which are rare or from producing it using renewable energy generated by hydro, solar, onshore, and offshore wind turbines. Building an electrolyzer infrastructure would be key to creating hydrogen-powered vehicles for long-distance travel with quick refuelling turnarounds. The trucking industry is likely the best candidate for the use of this fuel and technology.

Making ICE-Powered Vehicles More Efficient.

About 99% of global transportation today runs on ICE with 95% of the energy coming from liquid fuels made from petroleum. Experts at Yanmar Replacements Parts, a diesel engine aftermarket supplier, state that, “while hydrogen-powered and electric vehicles will be on the rise, ICEs will continue to remain the norm and will be for the foreseeable future.” That’s why companies are reluctant to abandon ICE to make the technology more compatible to lower carbon emissions. By choosing different materials during manufacturing, automotive companies believe that production emissions can be abated by 66%.

Dec 9, 2024

UK unveils world’s 1st AI-designed urban wind turbine with 7x efficiency

Posted by in categories: robotics/AI, sustainability

The world’s first urban wind turbine designed by AI has been unveiled in the UK.

Called the Birmingham Blade, the turbine is jointly developed by AI design specialists EvoPhase and precision metal fabricators KwikFab. The turbine is also tailored to the unique wind conditions of a specific geographic area.

EvoPhase claimed that it used its AI-driven design process to generate and test designs for their efficiency at wind speeds found in Birmingham, which, at 3.6 meters/second are substantially lower than the 10 meters/second rating for most turbines.

Dec 9, 2024

NASA Satellites reveal Abrupt Drop in Global Freshwater Levels

Posted by in categories: food, satellites, sustainability

An international team of scientists using observations from NASA-German satellites found evidence that Earth’s total amount of freshwater dropped abruptly starting in May 2014 and has remained low ever since. Reporting in Surveys in Geophysics, the researchers suggested the shift could indicate Earth’s continents have entered a persistently drier phase.

From 2015 through 2023, satellite measurements showed that the average amount of freshwater stored on land—that includes liquid surface water like lakes and rivers, plus water in aquifers underground—was 290 cubic miles (1,200 cubic km) lower than the average levels from 2002 through 2014, said Matthew Rodell, one of the study authors and a hydrologist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “That’s two and a half times the volume of Lake Erie lost.”

During times of drought, along with the modern expansion of irrigated agriculture, farms and cities must rely more heavily on groundwater, which can lead to a cycle of declining underground water supplies: freshwater supplies become depleted, rain and snow fail to replenish them, and more groundwater is pumped.

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