Company to harvest green hydrogen by igniting oil fires underground

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Injection wells at the Superb oil field in Canada. To make hydrogen, workers heat the reservoir with steam and feed it air, setting off underground oil fires.

This month, on the frozen plains of Saskatchewan in Canada, workers began to inject steam and air into the Superb field, a layer of sand 700 meters down that holds 200 million barrels of thick, viscous oil. Their goal was not to pump out the oil, but to set it on fire—spurring underground chemical reactions that churn out hydrogen gas, along with carbon dioxide (CO2). Eventually the company conducting the $3 million field test plans to plug its wells with membranes that would allow only the clean-burning hydrogen to reach the surface. The CO2, and all of its power to warm the climate, would remain sequestered deep in the earth.

“We want to launch the idea that you can get energy from petroleum resources and it can be zero carbon emissions,” says Ian Gates, a chemical engineer at the University of Calgary and co-founder of the startup, called Proton Technologies.

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3D Printing humans: A quick review of 3D Bioprinters

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It was only a matter of time before the iconic scene from 1997’s The Fifth Element became a reality. In the film Milla Jovovich’s character, Leeloo, is entirely rebuilt using her dead hand as a template. The resurrection is performed by a surgical robot that collects slices of heterogeneous tissue, generated from a yellow bio-ink, and places them rapidly in sequence, followed by the addition of softer tissues via long red fibres.

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New droplet-based electricity generator: A drop of water generates 140V power, lighting up 100 LED bulbs

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New droplet-based electricity generator: A drop of water generates 140V power, lighting up 100 LED bulbs

A research team led by scientists from the City University of Hong Kong (CityU) has recently developed a droplet-based electricity generator (DEG) with a field-effect transistor (FET)-like structure that allows for high energy conversion efficiency and instantaneous power density thousands of times that of its counterparts without FET technology. This would help to advance scientific research of water energy generation and tackle the energy crisis.

The research was led together by Professor Wang Zuankai from CityU’s Department of Mechanical Engineering, Professor Zeng Xiao Cheng from University of Nebraska-Lincoln, and Professor Wang Zhong Lin, founding director and chief scientist from Beijing Institute of Nanoenergy and Nanosystems of Chinese Academy of Sciences. Their findings were published in Nature in a study titled “A droplet-based electricity generator with high instantaneous power density.”

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3D printing gets bigger, faster and stronger

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HARP in action as it vertically and continuously prints a large 3D object.

Research advances are changing the image of a once-niche technology.

A resin printer from Chad Mirkin’s lab at Northwestern University in Illinois can create structures as large as a person in hours (image sequence sped up). Credit: Northwestern University

As a metal platform rises from a vat of liquid resin, it pulls an intricate white shape from the liquid — like a waxy creature emerging from a lagoon. This machine is the world’s fastest resin-based 3D printer and it can create a plastic structure as large as a person in a few hours, says Chad Mirkin, a chemist at Northwestern University in Evanston, Illinois. The machine, which Mirkin and his colleagues reported last October1, is one of a slew of research advances in 3D printing that are broadening the prospects of a technology once viewed as useful mainly for making small, low-quality prototype parts. Not only is 3D printing becoming faster and producing larger products, but scientists are coming up with innovative ways to print and are creating stronger materials, sometimes mixing multiple materials in the same product.

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Smart bandage detects infections, auto-releases antibiotic

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THE SMART BANDAGES SHORTENED WOUND-HEALING TIMES IN MOUSE STUDIES.

A colorful new weapon has emerged in the war on antibiotic resistance.

On Wednesday, researchers in China published a study in the journal ACS Central Science detailing their creation of a new kind of smart bandage. At first, when you apply it to a wound, the bandage is green. But if it detects a bacterial infection, the bandage turns yellow — and releases a built-in antibiotic to treat the infection.

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The smart cell turning solar energy into hydrogen

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What could be better than a solar cell that captures most of the visible light spectrum to generate energy? A cell that can capture the whole visible light spectrum and turn the energy into hydrogen. The cell is actually a molecule, and it is a busy molecule: it not only harnesses 50 percent more solar energy than existing solar cells, but it also turns this energy into hydrogen.

“The whole idea is that we can use photons from the sun and transform it into hydrogen. To put it simply, we are saving the energy from sunlight and storing it into chemical bonds so it can be used at a later time,” explains the lead researcher in the team that developed the molecule, chemistry professor Claudia Turro from the Ohio State University.

“What makes it work is that the system is able to put the molecule into an excited state, where it absorbs the photon and is able to store two electrons to make hydrogen,” Turro added. “This storing of two electrons in a single molecule derived from two photons, and using them together to make hydrogen, is unprecedented.”

The molecule is a form of rhodium—an inert metal and member of the platinum group—and because it can both collect solar energy and then act as a catalyst to turn it into hydrogen, it makes for a much more efficient fuel production system than existing alternatives, at least with respect to energy loss during the process of conversion of solar energy into hydrogen.

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Paralyzed man breaks world record for finishing a marathon in an exoskeleton suit

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Adam Gorlitsky says groups of people kept him going as he finished mile after mile of the 2020 Charleston Marathon.

(CNN)A South Carolina man competing in the 2020 Charleston Marathon has beaten the world record for the fastest time to finish a marathon in an exoskeleton suit.

Adam Gorlitsky, who is paralyzed from the waist down, completed Saturday’s 26.2-mile race with a time of 33 hours, 50 minutes and 23 seconds, Cory Michel, one of the organizers of the Charleston Marathon, told CNN.

The current record holder is British man Simon Kindleysides, who finished the 2018 London Marathon in 36 hours and 46 minutes, according to Guinness World Records.

Guinness has not certified Gorlitsky’s race results, which Gorlitsky said he plans to submit to the organization Monday.

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A Modular, 3D printed dog house made of 1000+ tennis balls

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CallisonRTKL + an idea + two 3D printers + 1,019 tennis balls = a clever dog house auctioned off to benefit the SPCA of Texas. The Dallas-based architecture and design office designed Fetch House with a continuous facade made up of over 1000 tennis balls held by a 3D printed modular support structure. The balls stay in place by compression but can easily be pulled out for a game of fetch with your pooch. When play time is over, the balls can be returned to the walls of the dog house.

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AI can help find illegal opioid sellers online. And wildlife traffickers. And counterfeits.

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Tablets suspected by the Drug Enforcement Administration to be fentanyl. Don Emmert/Getty Images

The government is investing in an AI-based tool that could help catch illegal opioid sales on the internet. But the same approach could find lots of other illicit transactions.

An estimated 130 people die from opioid-related drug overdoses each day in the United States, and 2 million people had an opioid use disorder in 2018. This public health crisis has left officials scrambling for ways to cut down on illegal sales of these controlled substances, including online sales.

Now the National Institute on Drug Abuse, which is part of the US Department of Health and Human Services, is investing in an artificial intelligence-based tool to track how “digital drug dealers” and illegal internet pharmacies market and sell opioids (though online transactions are likely not a large share of overall illegal sales).

New AI-based approaches to clamping down on illegal opioid sales demonstrate how publicly available social media and internet data — even the stuff you post — can be used to find illegal transactions initiated online. It could also be used to track just about anything else, too: The researcher commissioned by NIDA to build this tool, UC San Diego professor Timothy Mackey, told Recode the same approach could be used to find online transactions associated with illegal wildlife traffickers, vaping products, counterfeit luxury products, and gun sales.

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Alphabet CEO Sundar Pichai says there is ‘no question’ that AI needs to be regulated

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Alphabet and Google CEO Sundar Pichai. Photo by Vjeran Pavic / The Verge

‘The only question is how to approach it.’

Google and Alphabet CEO Sundar Pichai has called for new regulations in the world of AI, highlighting the dangers posed by technology like facial recognition and deepfakes, while stressing that any legislation must balance “potential harms … with social opportunities.”

“[T]here is no question in my mind that artificial intelligence needs to be regulated. It is too important not to,” writes Pichai in an editorial for The Financial Times. “The only question is how to approach it.”

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Scientists come up with a method to make oxygen from moon dust

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Artist impression of activities in a Moon Base. Power generation from solar cells, food production in greenhouses and construction using mobile 3D printer-rovers.

The moon is covered in fine, delicate dust called regolith which sticks to absolutely everything and causes all sorts of technical problems. But it is an abundant resource, and plans for making use of it include melting it with lasers to use for 3D printing or packing it into bricks to build habitats. Now, the European Space Agency (ESA) has come up with a different use for the tricky substance: Turning it into oxygen which could be used by lunar explorers for breathing and for the production of fuel.

Moon regolith is known to contain about 40 to 50% oxygen by weight, but it is bound in the form of oxides so it’s not immediately usable. Researchers at the European Space Research and Technology Centre (ESTEC) have been investigating ways to extract this oxygen using a technique called molten salt electrolysis. The regolith is placed in a metal basket along with molten calcium chloride salt and heated to a high temperature, then an electric current is passed through it so the oxygen can be extracted. A bonus of this method is that it also produces usable metal alloys as a by-product.

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China makes major breakthrough in space propulsion technology

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The 20-kW Hall thruster in operation at a laboratory of the China Aerospace Science and Technology Corporation

 China has made a major breakthrough in the development of the Hall-effect thruster (HET), an important space propulsion technology.

Researchers from the China Aerospace Science and Technology Corporation (CASC) have developed the country’s first HET with an input power of 20 kilowatts that can produce a thrust of one newton, marking a leap for China’s HETs from millinewton level to newton level.

The applications of HETs include control of the orientation and position of orbiting satellites and use as a main propulsion engine for medium-size robotic space vehicles.

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