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Category: energy – Page 205

Solar and wind power have proven themselves to be cost competitive, but energy storage is key. What if I told you that molten metal might make a better battery? Lower cost, simpler assembly, zero maintenance, and a longer lifetime than lithium-ion. Let’s take a closer look at liquid metal battery technology.

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Continue reading “Hot Energy Storage? Liquid Metal Battery Explained” | >

The toilet could turn roughly a pound of solid human waste, the average amount a human poops in a day, into an impressive 50 liters of methane gas, according to Cho. That means it can generate half a kilowatt hour of electricity, enough to drive an electric car for three quarters of a mile.

And because its 2021 — a day and age in which nothing is safe from the world of cryptocurrencies — Cho came up with a virtual currency called Ggool, or “honey” in Korean. Every use of the toilet scores you 10 Ggool per day, which can be used to buy stuff on the university’s campus.

“I had only ever thought that feces are dirty, but now it is a treasure of great value to me,” a postgraduate student Heo Hui-jin who’s both earned and spent Ggool, told Reuters. “I even talk about feces during mealtimes to think about buying any book I want.”

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Leaving earth to find new homes in space is an old dream of humanity and will sooner or later be necessary for our survival. The planet that gets the most attention is Mars, a small, toxic and energy poor planet that just about seems good enough for a colony of depressed humans huddled in underground cities.

But what if we think bigger? What if we take Venus, one of the most hostile and deadly places in the solar system and turn it into a colony? Not by building lofty cloud cities, but by creating a proper second earth? It might be easier than you think.

Continue reading “How To Terraform Venus (Quickly)” | >

Reasonable minds may differ on the question of whether hydrogen fuel cells have a place in the clean-energy future. However, it’s a fact that the fossil fuel giants have been heavily hyping hydrogen, and it’s not hard to see why, as the vast majority of hydrogen is currently produced from natural gas.

Oil companies are working hard to appear “green,” but their true efforts are quite clear. Some will do whatever it takes to slow the pace of electrification.

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The fossil fuel power plant that a private equity firm revived to mine bitcoin is at it again. Not content to just pollute the atmosphere in pursuit of a volatile crypto asset with little real-world utility, this experiment in free marketeering is also dumping tens of millions of gallons of hot water into glacial Seneca Lake in upstate New York.

“The lake is so warm you feel like you’re in a hot tub,” Abi Buddington, who lives near the Greenidge power plant, told NBC News.

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Two important factors limiting Moore’s Law are power consumption and Coulomb interactions are interactions between electric charges that follow Coloumb’s law, an electrodynamics theory.

These interactions can be a major challenge for the development of nanoelectronic circuits. Quantum spin Hall (QSH) insulators are particularly promising materials for the development of low-power electronics, yet so far the impact of Coulomb interactions on nanocircuits made by these materials have only been examined theoretically, rather than experimentally.

Researchers at Nanjing University and Peking University have recently observed one-dimensional (1D) Coulomb drag between adjacent QSH edges separated by an air gap. Their paper, published in Nature Electronics, highlights the potential of QSH effects for suppressing the adverse effects of Coulomb interactions on the performance of nanocircuits.

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