Archive for the ‘sustainability’ category: Page 7

Sep 1, 2022

Vision Marine breaks the world record for the fastest electric boat with 109 mph

Posted by in categories: sustainability, transportation

Sep 1, 2022

Where the buffalo roam, endangered prairies thrive

Posted by in categories: climatology, sustainability

A study 29 years in the making shows how bison reintroductions can create richer ecosystems and resilience against climate change in North America.

Sep 1, 2022

New process converts old PLA plastic into a better 3D-printing resin

Posted by in categories: 3D printing, chemistry, sustainability

Although plant-based polylactic acid (PLA) bioplastic is acclaimed for its biodegradability, it can take quite a long time to degrade if the conditions aren’t quite right. Bearing this fact in mind, Washington State University scientists have devised a way of upcycling it into a 3D-printing resin.

“[PLA] is biodegradable and compostable, but once you look into it, it turns out that it can take up to 100 years for it to decompose in a landfill,” said postdoctoral researcher Yu-Chung Chang, co-corresponding author of the study. “In reality, it still creates a lot of pollution. We want to make sure that when we do start producing PLA on the million-tons scale, we will know how to deal with it.”

To that end, Chang and colleagues developed a process in which an inexpensive chemical known as aminoethanol is used to break down the long chains of molecules that make up PLA. Those chains are rendered into simple monomers, which are the basic building blocks of plastic. The process takes about two days, and can be carried out at mild temperatures.

Aug 31, 2022

Scientists Grow Lead-Free Solar Material With a Built-In Switch

Posted by in categories: chemistry, nanotechnology, solar power, sustainability

Solar cell manufacturing just became easier, more efficient, and less costly. A team of researchers at DOE’s Lawrence Berkeley National Laboratory (Berkeley Lab), in collaboration with UC Berkeley, has discovered a unique material that can be used as a simpler approach to solar cell manufacturing, the team reported.

This material is a crystalline solar material with a built-in electric field — also known as “ferroelectricity” — that was reported earlier this year in the journal Science Advances.

Light microscopy image of nanowires, 100 to 1,000 nanometers in diameter, grown from cesium germanium tribromide (CGB) on a mica substrate. The CGB nanowires are samples of a new lead-free halide perovskite solar material that is also ferroelectric. (Credit: Peidong Yang and Ye Zhang/Berkeley Lab)

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Aug 31, 2022

Cultured meat is now being mass-produced In Israel

Posted by in categories: futurism, sustainability

Israeli startup Future Meat Technologies has opened what it says is the first industrial-scale cultured meat production facility — a move designed to finally get lab-grown meat onto consumers’ plates.

“Our goal is to make cultured meat affordable for everyone,” CSO Yaakov Nahmias said in a press release, “while ensuring we produce delicious food that is both healthy and sustainable, helping to secure the future of coming generations.”

Why it matters: Demand for meat is higher than ever before, but the traditional means of producing it — by raising and slaughtering animals — is bad for the environment and arguably unethical.

Aug 31, 2022

Bioengineering better photosynthesis increases yields in food crops

Posted by in categories: bioengineering, climatology, health, sustainability

For the first time, RIPE researchers have proven that multigene bioengineering of photosynthesis increases the yield of a major food crop in field trials. After more than a decade of working toward this goal, a collaborative team led by the University of Illinois has transgenically altered soybean plants to increase the efficiency of photosynthesis, resulting in greater yields without loss of quality.

Results of this magnitude couldn’t come at a more crucial time. The most recent UN report, The State of Food Security and Nutrition in the World 2022, found that in 2021 nearly 10% of the world population was hungry, a situation that has been steadily worsening over the last few years and eclipsing all other threats to global health in scale. According to UNICEF, by 2030, more than 660 million people are expected to face food scarcity and malnutrition. Two of the major causes of this are inefficient food supply chains (access to food) and harsher growing conditions for crops due to climate change. Improving access to food and improving the sustainability of food crops in impoverished areas are the key goals of this study and the RIPE project.

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Aug 31, 2022

REALLY Fast EV Charging: Korean Tech Charges Battery in 60 sec

Posted by in categories: energy, sustainability, transportation

The Korea Advanced Institute of Science and Technology (KAIST) recently did some things to advance EV charging tech that are way over my head to make a battery that could theoretically charge an electric car in only one minute.

That might seem silly to people with a decent EV, but I recently found something that could eventually make EV charging so fast that even the owner of a Porsche Taycan might be shocked and amazed— and, as the owner of a Nissan LEAF, I’m lucky to get a 50 kW charge rate, but that’s only on the first charge. If I try to go anywhere on the highway, I quickly find that the second and third charges are a lot slower. If I keep going, I can expect to get charging rates as low as 14 kW on the second or third session, which is more like DC slow charging than DC fast charging. When I get a chance to test and review better EVs, it seems like witchcraft when getting charging over 100 kW, and faster 250 and 350 kW charging sessions look like alien technology.

“The hybrid lithium-ion battery, which has a high energy density (285 Wh/kg) and can be rapidly charged with a high-power density (22,600 W/kg), is overcoming the limitations of the current energy storage system,” Professor Jung-Goo Kang of the Department of Materials Science and Engineering said. “It will be a breakthrough.”

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Aug 30, 2022

Elon Musk Says World Needs More Oil and Gas as Bridge to Renewables

Posted by in categories: Elon Musk, energy, sustainability, transportation

The world needs a bridge to the renewable energy future.

The world needs more oil and gas to deal with the energy shortages it is currently facing, Tesla CEO Elon Musk said at an energy conference in Norway on Monday, Bloomberg.

The comment might seem strange coming from a person who sells electric vehicles, battery packs, and solar roofing products. However, this isn’t the first time Elon Musk has made such a comment.

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Aug 30, 2022

High-capacity Li-metal battery with improved rate-performance and stability

Posted by in categories: energy, sustainability, transportation

A study of Li-metal batteries by the research team led by Dr. Byung Gon Kim at Next-Generation Battery Research Center of Korea Electrotechnology Research Institute (KERI) was published as a cover paper in the international journal ACS Nano.

While the current Li-ion batteries generate energy by taking Li-ions in and out of the based on the intercalation mechanism, the Li-metal battery does not rely on this bulky and heavy graphite but uses metallic Li itself as the anode. As the Li-metal shows 10 times higher theoretical capacity (3,860 mAh/g) than graphite (372 mAh/g), it has steadily gained much attention from areas that need high-capacity batteries, such as and energy storage systems.

Despite this advantage, Li can grow in the shape of a tree branch, called a Li dendrite, if it is not uniformly and effectively stored when cycling process, leading to large volume expansion of the electrode, which in turn may shorten the battery’s cycle life and cause safety issue such as fire and explosion triggered by internal short-circuits.

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Aug 29, 2022

Drones are reshaping how rice is farmed in Vietnam

Posted by in categories: drones, food, sustainability

Vietnam is the world’s second-largest rice exporter, and XAG says its agricultural drones have become the “new favorite” of farmers that grow the crop.

Lê Thành Nguyên, at 62 years old, is one of the early adopters of agricultural drones in Vietnam. This year, he used drones on his seven-hectare rice farm for crop spraying, fertilization, and direct seeding by ordering the service from a local pilot team.

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