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The stretchy device, which can be worn like a ring, contains a series of thin thermoelectric chips that are connected using liquid metal wires. (Image Credit: CU Boulder)   CU Boulder researchers have created an inexpensive wearable device that turns the human body into a battery. The device’s stretchability allows it to be worn like a ring, bracelet, or an accessory that comes in contact with the skin. It works by using thermoelectric generators to convert body heat into electricity ...
Bitcoin now consumes more energy per year (over 121 terawatt-hours) than Argentina and the United Arab Emirates. (Image Credit: André François McKenzie/Unsplash)   If Bitcoin were a country, it would rank 33rd in energy consumption around the world. According to an analysis by Cambridge University, Bitcoin consumes over 121 terawatt-hours per year, which is 0.5% of the world’s energy production. It’s also more than what Argentina and the United Arab Emirates use yea ...
Alternative sources of energy, like solar and wind, are pushing to take over 90% of the remaining U.S. power grid. (Image Credit: Suganth/Unsplash)   Thirty years ago, the U.S generated enough solar and wind power to surpass one-tenth of 1% of the nation’s electricity, an achievement that took 18 years. Twelve years later, solar and wind increased by another factor of 10. Just last year, solar and wind-generated 10.5% of U.S. electricity. This is because the U.S. power demand hasn ...
A winter storm caused wind turbines to freeze over in Texas, which limited the state’s power generation capacity during record-breaking power demand. (Image Credit: Vincent Foret/Unsplash)   Nearly half of Texas’ wind power generation capacity has been cut off due to a winter storm that slammed the state over the weekend, leaving 3 million people without power. Usually, Texas wind farms generate 25,100 megawatts of power. According to the Electric Reliability Council of Texas ( ...
Using solar panels on a farm could benefit both plants and the panel. It provides shade to the plant while producing more energy. (Image Credit: Unsplash)   Just before winter in 2018, a vegetable plot planted underneath rows of solar panels on stilts at Monzo Elementary School in Tucson was still growing. Greg Barron-Gafford, an associate professor at the University of Arizona’s School of Geography, and his research team watched the plants flourish under the panels’ shade duri ...
Some time ago I posted an article about how temperature affects battery measurements. What I was curious about at the time was how much impact temperature had when measuring lead acid or AGM (absorbent glass mat) batteries, and it turned out that the effect was bigger than at least I had expected. The obvious question at the time was: What about lithium ion batteries? For a closer look at how temperature affects the measurement of LIBs my device under test was a Samsung INR18650-35E cell. Like w ...
This microscopic image shows cable bacteria reaching out for oxygen. The milky line is the deformed oxygen front, which contains smaller bacteria drawn to the interface with the lower oxygen-free layer.  (Image Credit: Stefano Scilipoti)   A decade ago, Aarhus University researchers discovered cable bacteria that survive by conducting electricity over centimeter-long distances in marine and freshwater sediments. Now, the team has reported that some cells function with high oxygen cons ...
The Bill Gates fund is looking to invest in 40 to 50 startups dedicated to clean tech. BEV wants to invest in startups focusing on “tougher climate challenges.” (Image credit: BEV)   Breakthrough Energy Ventures (BEV), Bill Gates’ cleantech venture capital fund, recently raised $1 billion for a second round of investments. Previously, they invested in 45 startups with its first billion, which included investments in energy storage, lithium mining, nuclear fusion, and hydr ...
StoreDot has developed new lithium-ion batteries that can fully charge in just five minutes. The company expects prototypes to be released later this year. (Image Credit: CHUTTERSNAP/Unsplash)   Electric vehicles are key to helping fight the climate crisis, but drivers often worry about running out of charge during a journey. Now, StoreDot has developed new lithium-ion batteries capable of fully charging in as little as five minutes. While StoreDot produced the batteries, they were manufac ...
A new report showed renewable energy delivered more electricity last year than fossil fuels. More European countries are turning to wind and solar power. (Image credit: Ashley Cooper | Getty Images)   For the first time in history, renewable sources beat fossil fuels in Europe last year, according to an annual report from Ember and Agora Energiewende. The joint research team found that renewables delivered 38% of electricity last year, compared to 37% delivered by fossil fuels. So, what's ...

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