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Archive for the ‘sustainability’ category: Page 101

Jul 30, 2023

Artificial photosynthesis with engineering of protein crystals in bacteria

Posted by in categories: engineering, genetics, solar power, sustainability

In-cell engineering can be a powerful tool for synthesizing functional protein crystals with promising catalytic properties, show researchers at Tokyo Tech. Using genetically modified bacteria as an environmentally friendly synthesis platform, the researchers produced hybrid solid catalysts for artificial photosynthesis. These catalysts exhibit high activity, stability, and durability, highlighting the potential of the proposed innovative approach.

Protein crystals, like regular crystals, are well-ordered molecular structures with diverse properties and a huge potential for customization. They can assemble naturally from materials found within cells, which not only greatly reduces the synthesis costs but also lessens their environmental impact.

Although are promising as catalysts because they can host various functional molecules, current techniques only enable the attachment of small molecules and simple proteins. Thus, it is imperative to find ways to produce protein crystals bearing both natural enzymes and synthetic functional molecules to tap their full potential for enzyme immobilization.

Jul 30, 2023

Why Are Tesla Owners Selling Their Model 3s? Here’s What One Survey Revealed About Their Perception Of Elon Musk

Posted by in categories: Elon Musk, sustainability, transportation

Since launching in July 2017, the Model 3 from Tesla Inc TSLA has been one of the bestselling electric vehicles of all time.

A recent Bloomberg survey reveals how Model 3 owners have felt about the company over time — and Tesla CEO Elon Musk might not love the results.

What Happened: The Model 3 and Model Y continue to be Tesla’s bestselling models and big reasons why the company has dominated the market share for electric vehicles around the world.

Jul 29, 2023

Avalon Explosion: Life on Earth Didn’t Arise As Described in Textbooks

Posted by in category: sustainability

No, oxygen didn’t catalyze the swift blossoming of Earth’s first multicellular organisms. The result defies a 70-year-old assumption about what caused an explosion of oceanic fauna hundreds of millions of years ago.

Between 685 and 800 million years ago, the Avalon explosion — a forerunner era of the more famed Cambrian explosion — marked the emergence of multicellular organisms in Earth’s oceans. Prior to this era, the world was dominated by single-celled amoeba, algae, and bacteria for over 2 billion years. The Avalon explosion saw a sudden surge in biodiversity, with sea sponges and other complex multicellular organisms replacing their simpler, single-celled counterparts.

Previously, it was postulated that this significant leap in evolutionary complexity was triggered by increased oxygen levels. However, this is being disproved by recent research by the University of Copenhagen, in collaboration with the Woods Hole Oceanographic Institute, the University of Southern Denmark, and Lund University, among others.

Jul 29, 2023

Tesla Commences Production of Dojo Supercomputer for Autonomous Vehicle Training

Posted by in categories: Elon Musk, robotics/AI, supercomputing, sustainability

In its second-quarter earnings report for 2023, Tesla revealed its ambitious plan to address vehicle autonomy at scale with four key technology pillars: an extensive real-world dataset, neural net training, vehicle hardware, and vehicle software. Notably, the electric vehicle manufacturer asserted its commitment to developing each of these pillars in-house. A significant milestone in this endeavor was announced as Tesla started the production of its custom-built Dojo training computer, a critical component in achieving faster and more cost-effective neural net training.

While Tesla already possesses one of the world’s most potent Nvidia GPU-based supercomputers, the Dojo supercomputer takes a different approach by utilizing chips specifically designed by Tesla. Back in 2019, Tesla CEO Elon Musk christened this project as “Dojo,” envisioning it as an exceptionally powerful training computer. He claimed that Dojo would be capable of performing an exaflop, or one quintillion (1018) floating-point operations per second, an astounding level of computational power. To put it into perspective, performing one calculation every second on a one exaFLOP computer system would take over 31 billion years, as reported by Network World.

The development of Dojo has been a continuous process. At Tesla’s AI Day in 2021, the automaker showcased its initial chip and training tiles, which would eventually form a complete Dojo cluster, also known as an “exapod.” Tesla’s plan involves combining two sets of three tiles in a tray, and then placing two trays in a computer cabinet to achieve over 100 petaflops per cabinet. With a 10-cabinet system, Tesla’s Dojo exapod will exceed the exaflop barrier of compute power.

Jul 29, 2023

Tesla exaggerated range figures, set up secret team to divert customer complaints

Posted by in categories: sustainability, transportation

ODD ANDERSEN/Getty.

The range has been a top concern for potential buyers transitioning from internal combustion vehicles to electric ones. In 2008, when EVs were still a rare new concept, Tesla promised a 200-mile (320 km) range on a single charge on its Roadster, a model it soon discontinued. Its second offering, Model S, promised a higher range of 249 miles (401 km) in 2012.

Jul 29, 2023

Solar batteries: A new material makes it possible to simultaneously absorb light and store energy

Posted by in categories: solar power, sustainability

A collaborative effort between the University of Cordoba and the Max Planck Institute for Solid State Research (Germany) is making progress on the design of a solar battery made from an abundant, non-toxic and easily synthesized material composed of 2D carbon nitride. The work is published in the journal Advanced Energy Materials.

Solar energy is booming. The improvement of solar technology’s capacity to capture as much light as possible, convert it into energy and make it available to meet energy needs is key in the ecological transition towards a more sustainable use of energy sources.

In the process between the collection of light by the solar cell and the on-demand use of energy by , for example, storage plays a crucial role since the availability of has an inherent intermittency.

Jul 29, 2023

The World’s Largest Wind Turbine Has Been Switched On

Posted by in category: sustainability

China has long been touted as a revolutionary when it comes to wind power. Earlier this year, it was reported that the country had begun construction of a wind farm using what were then hailed as the largest turbines ever seen, each with a capacity of 16 megawatts. Now, a new milestone has been reached, with the successful switch-on of a turbine with a rotor diameter over twice the length of a football field.

China Three Gorges Corporation announced that the 16-megawatt MySE 16–260 turbine had been successfully installed at the company’s offshore wind farm near Fujian Province on July 19. The behemoth is 152 meters (500 feet) tall, and each single blade is 123 meters (403 feet) and weighs 54 tons. This means that the sweep of the blades as they rotate covers an area of 50,000 square meters (nearly 540,000 square feet).

It’s the first time such a large turbine has been hooked up to a commercial grid.

Jul 28, 2023

NASA’s Juno Jupiter probe to get closest view of volcanic moon Io on July 30

Posted by in categories: satellites, sustainability

NASA’s Juno spacecraft will get closer than ever before to Jupiter’s fiery moon, Io, this weekend.

On Sunday (July 30), the solar-powered mission will come within 13,700 miles (22,000 km) of Io’s volcanic surface. This Jovian satellite is just slightly larger than Earth’s moon, making it the fourth largest moon in our solar system.

Jul 28, 2023

What is PHASA-35? Cutting edge stratosphere drone passes key test in U.S.

Posted by in categories: drones, military, robotics/AI, sustainability

A new solar-powered high-altitude drone has successfully navigated a stratospheric test, opening the door to a new set of possibilities for unmanned vehicles, not least in modern warfare.

The PHASA-35 solar and battery-powered unmanned aerial system reached an altitude of 66,000 feet during a 24-hour test flight launched from New Mexico in June, British defense giant BAE Systems said in mid-July.

The stratospheric test, which comes after the system’s maiden flight back in 2020, “marks a significant milestone” in the development program started in 2018, BAE said in a press release.

Jul 28, 2023

Researchers use quantum computer to identify molecular candidate for development of more efficient solar cells

Posted by in categories: computing, particle physics, quantum physics, solar power, sustainability

Using the full capabilities of the Quantinuum H1-1 quantum computer, researchers from the Department of Energy’s Oak Ridge National Laboratory not only demonstrated best practices for scientific computing on current quantum systems but also produced an intriguing scientific result.

By modeling —in which absorption of a single photon of light by a molecule produces two —the team confirmed that the linear H4 molecule’s energetic levels match the fission process’s requirements. The linear H4 molecule is, simply, a molecule made of four hydrogen atoms arranged in a linear fashion.

A molecule’s energetic levels are the energies of each quantum state involved in a phenomenon, such as singlet fission, and how they relate and compare with one another. The fact that the linear molecule’s energetic levels are conducive to singlet fission could prove to be useful knowledge in the overall effort to develop more efficient solar panels.

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