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Nov 27, 2024

Solar-Powered ‘Planimal’ Cells? Chloroplasts in Hamster Cells Make Food From Light

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

The ability of plants to convert sunlight into food is an enviable superpower. Now, researchers have shown they can get animal cells to do the same thing.

Photosynthesis in plants and algae is performed by tiny organelles known as chloroplasts, which convert sunlight into oxygen and chemical energy. While the origins of these structures are hazy, scientists believe they may have been photosynthetic bacteria absorbed by primordial cells.

Our ancestors weren’t so lucky, but now researchers from the University of Tokyo have managed to rewrite evolutionary history. In a recent paper, the team reported they had successfully implanted chloroplasts into hamster cells where they generated energy for at least two days via the photosynthetic electron transport process.

Nov 26, 2024

Cooling with light: Exploring optical cooling in semiconductor quantum dots

Posted by in categories: energy, quantum physics

Cooling systems are an integral part of many modern technologies, as heat tends to wear down materials and decrease performance in several ways. In many cases, however, cooling can be an inconvenient and energy-intensive process. Accordingly, scientists have been seeking innovative and efficient methods to cool substances down.

Solid-state optical cooling is a prominent example that leverages a very unique phenomenon called anti-Stokes (AS) emission. Usually, when materials absorb photons from incoming light, their electrons transition into an “excited” state.

Under ideal conditions, as electrons return to their original state, part of this excess energy is released as light, while the rest is converted into heat.

Nov 26, 2024

Spin-powered crystals dramatically improve water splitting process for clean hydrogen production

Posted by in categories: chemistry, energy, sustainability

Water splitting—breaking water molecules into hydrogen and oxygen—is a promising pathway to sustainable energy. However, this process has long been challenged by the slow chemical kinetics of the oxygen evolution reaction that make hydrogen production inefficient and costly.

An international research team has now uncovered a solution. By using special crystals with unique intrinsic “chiral” structures—meaning they have a distinctive left or right-handed atomic arrangement—researchers have dramatically improved the water splitting process.

The findings are published in the journal Nature Energy.

Nov 25, 2024

Plasma pursuits: HEDS Center fellows illuminate the fourth state of matter

Posted by in categories: energy, physics

In 2019, the High Energy Density Science (HEDS) Center at Lawrence Livermore National Laboratory (LLNL) launched its postdoctoral fellowship program, welcoming one new scientist annually to come and conduct research for a two-year term. Supported by LLNL’s Weapons Physics and Design program, HEDS fellows are encouraged to pursue their own research agenda as it relates to the study of matter and energy under extreme conditions.

The most recent postdoctoral fellows, physicist Elizabeth “Liz” Grace (2022 fellow) and plasma physicist Graeme Sutcliffe (2023 fellow), are using high-intensity lasers and advanced diagnostics to observe the behaviors of plasma. A plasma, known as the “fourth state of matter,” is a superheated, ionized gas that makes up the majority of visible matter in the universe, like stars and nebulae. Replicating these conditions is a key step to achieving robust igniting inertial fusion designs for energy resilience.

Nov 25, 2024

Chinese scientists claim they have built a Death Star-inspired beam weapon

Posted by in categories: energy, space

Do you remember the moment in “Star Wars” when the Death Star destroys Alderaan? Eight laser beams converge at a single point to form a super-powered laser that obliterates the planet. It was a memorable scene that demonstrated the unrelenting power of the Empire.

Although it is unclear whether they were inspired by the scene, Chinese scientists claim they have created a new type of microwave weapon that combines several high-powered electromagnetic waves. They can then concentrate them onto a target.

The weapon system consists of multiple microwave-transmitting vehicles that are deployed to different locations. Each of the vehicles fire microwaves with high-precision synchronization. These merge together into a powerful energy beam to attack one target.

Nov 25, 2024

Quantum Physics Unlocks Hidden Energy for a Cleaner Future

Posted by in categories: energy, quantum physics, sustainability

A breakthrough at Rice University enhances thermophotovoltaic systems with a new thermal emitter design, achieving over 60% efficiency.

This could transform energy conversion, making it a viable alternative to batteries for grid-scale energy storage and sustainable industry practices.

Researchers at Rice University have developed an innovative way to enhance thermophotovoltaic (TPV) systems, which convert heat into electricity using light. Drawing inspiration from quantum physics, engineer Gururaj Naik and his team designed a highly efficient thermal emitter that works within realistic design constraints.

Nov 25, 2024

What would it cost to kill coal?

Posted by in category: energy

The price of shutting down coal power, and what would be gained.

Nov 24, 2024

Making America Great Again Means Fixing Its Dystopian Cities

Posted by in category: energy

So, is it true…


As I say, Carlson was roundly criticized for his comments. Some of that criticism was entirely justified, although much of it was not. And in any case, Longoria will not be criticized at all for her statements, in part because she’s a leftist and, thus, above criticism, and in part because she, like Carlson, has a point. Public spaces in American cities are, in most cases, grotesque. That’s almost inarguable. Among other things, Tucker was bashed because he made what seemed to be a partisan argument. He was clearly and undeniably criticizing urban Democratic politics and policies. The irony here is that Longoria was too, although neither she nor any of her supporters and fans understand that.

As Democrats continue their soul-searching, and as media and other analysts try to dissect the causes of the enormous Republican victory not quite two weeks ago, one lesson will likely go unlearned. The American people really do want their country to be great again. To them, that doesn’t mean that the United States should be an omnipotent global colossus, striding the globe, enforcing its will on everyone and everything. And it doesn’t mean that Americans should win every gold medal at every Olympics or every Nobel Prize or anything like that. Americans just want their country to work again. They just want their cities to function. They want to be able to build homes or power plants or new factories without having to spend countless months and endless resources complying with arcane and ridiculous regulations. They want their country to look and feel and operate like a normal place again.

Continue reading “Making America Great Again Means Fixing Its Dystopian Cities” »

Nov 24, 2024

How Wastewater and Gas Flares Could Supercharge Green Hydrogen Production

Posted by in categories: energy, engineering, information science, sustainability

Oil and gas extraction in places like Texas’ Permian Basin leads to several waste products, including significant amounts of wastewater and flares firing into the sky. Texas Engineer Vaibhav Bahadur is researching how those byproducts, which are harmful to the environment, could be repurposed to serve as key elements in the creation of “green” hydrogen.

Bahadur, an associate professor in the Walker Department of Mechanical Engineering, recently published a new paper in the journal Desalination about a new way to potentially produce green hydrogen. It involves using the energy wasted via gas flaring to power reverse osmosis, a common, low-energy technique used for municipal water treatment. Hydrogen production requires pristine water, and this process satisfies that need by removing salts and other elements from the equation.

Learn more about green hydrogen in the Q&A with Bahadur below, as well as his research, next steps and its broader implications.

Nov 24, 2024

Honda Is Getting Closer To Making Solid-State Batteries

Posted by in categories: energy, transportation

The automaker built a demonstration production line to figure out how to make affordable, high-density solid-state batteries for EVs and everything else.

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