Tag: climate-change

Scientists Use Stem Cells To Grow Animal-Free Pork In a Lab

A new study published in the journal Scientific Reports describes research “designed to generate muscle from a newly established pig stem-cell line, rather than from primary cells taken directly from a pig, ” says co-author Dr. Nicholas Genovese, a stem-cell biologist. “This entailed understanding the biology of relatively uncharacterized and recently-derived porcine induced pluripotent stem cell lines. What conditions support cell growth, survival and differentiation? These are all questions I had to figure out in the lab before the cells could be turned into muscle.” Digital Trends reports: It may not sound like the most appetizing of foodstuffs, but pig skeletal muscle is in fact the main component of pork. The fact that it could be grown from a stem-cell line, rather than from a whole pig, is a major advance. This is also true of the paper’s second big development: the fact that this cultivation of pig skeletal muscle didn’t use animal serum, a component which has been used in other livestock muscle cultivation processes. [Genovese] acknowledges that there are other non-food-related possibilities the work hints at. “There is a contingent interest in using the pig as a model to study disease and test regenerative therapies for human conditions, ” he said. Read more of this story at Slashdot.

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Scientists Use Stem Cells To Grow Animal-Free Pork In a Lab

Patent Office Rules CRISPR Patents, Potentially Worth Billions, Belong To Broad Institute

According to a ruling by judges at the United States Patent and Trademark Office, the disputed patents on the gene-editing tool CRISPR belong to the Broad Institute of MIT and Harvard. “The ruling comes a little over two months after a high-profile court hearing, during which MIT and University of California, Berkeley heatedly argued about who should own CRISPR, ” The Verge reports. From their report: STAT News reported that the decision was one sentence long. The three judges decided that the Broad patents are different enough from the ones the University of California applied for that the Broad patents stand. The patent ruling suggests that the work done by Jennifer Doudna of the University of California and her colleagues on CRISPR wasn’t so groundbreaking as to make any other advance obvious. But that legal opinion isn’t how the science world views her work, STAT points out: “Doudna and her chief collaborator, Emmanuelle Charpentier, won the $3 million Breakthrough Prize in the life sciences in 2015, the $500, 000 Gruber Genetics Prize in 2015, and the $450, 000 Japan Prize in 2017, ” the outlet notes. Read more of this story at Slashdot.

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Patent Office Rules CRISPR Patents, Potentially Worth Billions, Belong To Broad Institute

Scientists Have Invented Paper That You Can Print With Light, Erase With Heat, and Reuse 80 Times

An anonymous reader quotes a report from Quartz: Nearly 1% of carbon emissions annually can be attributed to paper production, even though we recycle much of the paper we produce. Yadong Yin has a solution. He and his colleagues at the University of California at Riverside have invented a type of paper that can be printed on using just light, erased by heating, and reused up to 80 times. Yin created nanoparticles, which are a million times smaller than the thickness of human hair, with the dye Prussian blue, or its chemical analogues, and titanium oxide, which is commonly used in white wall paint. This mixture is then applied to normal paper. When the coating is exposed to ultraviolet light, electrons from titanium oxide move to the dye in the nanoparticle. This addition of electrons makes the blue dye turn white. Focusing the ultraviolet light into shapes, you can print white words on a blue background — or blue words on a white background, which are easier to read. If left alone, the paper reverts to its original state in five days. That process can be accelerated by heating the paper to 120 C (250 F) for 10 minutes. Read more of this story at Slashdot.

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Scientists Have Invented Paper That You Can Print With Light, Erase With Heat, and Reuse 80 Times

Scientists Finally Turn Hydrogen Into a Metal, Ending a 80-Year Quest

An anonymous reader quotes a report from Ars Technica: In 1935, scientists predicted that the simplest element, hydrogen, could also become metallic under pressure, and they calculated that it would take 25 GigaPascals to force this transition (each Gigapascal is about 10, 000 atmospheres of pressure). That estimate, in the words of the people who have finally made metallic hydrogen, “was way off.” It took until last year for us to reach pressures where the normal form of hydrogen started breaking down into individual atoms — at 380 GigaPascals. Now, a pair of Harvard researchers has upped the pressure quite a bit more, and they have finally made hydrogen into a metal. All of these high-pressure studies rely on what are called diamond anvils. This hardware places small samples between two diamonds, which are hard enough to stand up to extreme pressure. As the diamonds are forced together, the pressure keeps going up. Current calculations suggested that metallic hydrogen might require just a slight boost in pressure from the earlier work, at pressures as low as 400 GigaPascals. But the researchers behind the new work, Ranga Dias and Isaac Silvera, discovered it needed quite a bit more than that. In making that discovery, they also came to a separate realization: normal diamonds weren’t up to the task. “Diamond failure, ” they note, “is the principal limitation for achieving the required pressures to observe SMH, ” where SMH means “solid metallic hydrogen” rather than “shaking my head.” The team came up with some ideas about what might be causing the diamonds to fail and corrected them. One possibility was surface defects, so they etched all diamonds down by five microns to eliminate these. Another problem may be that hydrogen under pressure could be forced into the diamond itself, weakening it. So they cooled the hydrogen to slow diffusion and added material to the anvil that absorbed free hydrogen. Shining lasers through the diamond seemed to trigger failures, so they switched to other sources of light to probe the sample. After loading the sample and cranking up the pressure (literally — they turned a handcrank), they witnessed hydrogen’s breakdown at high pressure, which converted it from a clear sample to a black substance, as had been described previously. But then, somewhere between 465 and 495 GigaPascals, the sample turned reflective, a key feature of metals The study has been published in the journal Science. Read more of this story at Slashdot.

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Scientists Finally Turn Hydrogen Into a Metal, Ending a 80-Year Quest

MIT Unveils New Material That’s Strongest and Lightest On Earth

A team of MIT researchers have created the world’s strongest and lightest material known to man using graphene. Futurism reports: Graphene, which was heretofore, the strongest material known to man, is made from an extremely thin sheet of carbon atoms arranged in two dimensions. But there’s one drawback: while notable for its thinness and unique electrical properties, it’s very difficult to create useful, three-dimensional materials out of graphene. Now, a team of MIT researchers discovered that taking small flakes of graphene and fusing them following a mesh-like structure not only retains the material’s strength, but the graphene also remains porous. Based on experiments conducted on 3D printed models, researchers have determined that this new material, with its distinct geometry, is actually stronger than graphene — making it 10 times stronger than steel, with only five percent of its density. The discovery of a material that is extremely strong but exceptionally lightweight will have numerous applications. As MIT reports: “The new findings show that the crucial aspect of the new 3-D forms has more to do with their unusual geometrical configuration than with the material itself, which suggests that similar strong, lightweight materials could be made from a variety of materials by creating similar geometric features.” Read more of this story at Slashdot.

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MIT Unveils New Material That’s Strongest and Lightest On Earth

A Coal-Fired Power Plant In India Is Turning Carbon Dioxide Into Baking Soda

schwit1 quotes a report from MIT Technology Review: In the southern Indian city of Tuticorin, locals are unlikely to suffer from a poorly risen cake. That’s because a coal-fired thermal power station in the area captures carbon dioxide and turns it into baking soda. Carbon capture schemes are nothing new. Typically, they use a solvent, such as amine, to catch carbon dioxide and prevent it from escaping into the atmosphere. From there, the CO2 can either be stored away or used. But the Guardian reports that a system installed in the Tuticorin plant uses a new proprietary solvent developed by the company Carbon Clean Solutions. The solvent is reportedly just slightly more efficient than those used conventionally, requiring a little less energy and smaller apparatus to run. The collected CO2 is used to create baking soda, and it claims that as much as 66, 000 tons of the gas could be captured at the plant each year. Its operators say that the marginal gain in efficiency is just enough to make it feasible to run the plant without a subsidy. In fact, it’s claimed to be the first example of an unsubsidized industrial plant capturing CO2 for use. schwit1 notes: “A ‘climate change’ project that doesn’t involve taxpayer dollars? Is that even allowed?” Read more of this story at Slashdot.

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A Coal-Fired Power Plant In India Is Turning Carbon Dioxide Into Baking Soda

Scientists Develop a Breathalyzer That Detects 17 Diseases With One Breath From a Patient

randomErr quotes a report from Quartz: In the last 10 years, researchers have developed specific sniff tests for diagnosing tuberculosis, hypertension, cystic fibrosis, and even certain types of cancer. A group of global researchers led by Hossam Haick at the Israel Institute of Technology have taken the idea a step further. They’ve built a device — a kind of breathalyzer — that is compact and can diagnose up to 17 diseases from a single breath of a patient. The breathalyzer has an array of specially created gold nanoparticles, which are sized at billionths of a meter, and mixed with similar-sized tubes of carbon. These together create a network that is able to interact differently with each of the nearly 100 volatile compounds that each person breaths out (apart from gases like nitrogen, oxygen, and carbon dioxide). Haick’s team collected 2, 800 breaths from more than 1, 400 patients who were each suffering from at least one of 17 diseases (in three classes: cancer, inflammation, and neurological disorders). Each sample of the disease was then passed through the special breathalyzer, which then produced a dataset of the types of chemicals it could detect and in roughly what quantities. The team then applied artificial intelligence to the dataset to search for patterns in the types of compounds detected and the concentrations they were detected at. As they report in the journal ACS Nano, the data from the breathalyzer could be used to accurately detect that a person is suffering from a unique disease nearly nine out of ten times. Read more of this story at Slashdot.

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Scientists Develop a Breathalyzer That Detects 17 Diseases With One Breath From a Patient

You’re An Adult, But Your Brain Might Not Be, Researchers Say

“The human brain reaches its adult volume by age 10, but the neurons that make it up continue to change for years after that, ” reports the New York Times, citing a new paper by neuroscience researchers that questions when “adulthood” really begins. An anonymous reader writes: One of the paper’s authors — an associate psychology professor at Harvard — tells CNN that “There is no agreed-on benchmark that, when reached, would allow a neuroscientist to say ‘Aha! This brain is fully developed’. However, it is safe to say that by almost any metric, the brain is continuing to develop actively well past the age of 18…” “Some children, researchers have found, have neural networks that look as if they belong to an adult…” adds the Times, noting that adolescents also “do about as well as adults on cognition tests, for instance. But if they’re feeling strong emotions, those scores can plummet. The problem seems to be that teenagers have not yet developed a strong brain system that keeps emotions under control.” And this cuts both ways, according to a psychologist at Temple University who wants the voting age lowered to 16. (“Sixteen-year-olds are just as good at logical reasoning as older people are, ” he tells the Times) But he also believes judges should consider the lack of emotional control when sentencing defendants — even if they’re in their early 20s. “Most crime situations that young people are involved in are emotionally arousing situations — they’re scared, or they’re angry, intoxicated or whatever.” Read more of this story at Slashdot.

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You’re An Adult, But Your Brain Might Not Be, Researchers Say

Ebola Vaccine Gives 100 Percent Protection, Could Be Readily Available By 2018

According to a study published in the Lancet medical journal on Thursday, an experimental vaccine against the Ebola virus was found to be 100 percent effective. The results offer hope of better protection against the disease that ravaged West Africa in 2014, killing more than 11, 000 people. From a report on BBC: A highly effective vaccine that guards against the deadly Ebola virus could be available by 2018, says the World Health Organization. Trials conducted in Guinea, one of the West African countries most affected by an outbreak of Ebola that ended this year, show it offers 100% protection. The vaccine is now being fast-tracked for regulatory approval. Manufacturer Merck has made 300, 000 doses of the rVSV-ZEBOV vaccine available for use should Ebola strike. GAVI, the global vaccine alliance, provided $5m for the stockpile. Results, published in The Lancet medical journal, show of nearly 6, 000 people receiving the vaccine, all were free of the virus 10 days later. In a group of the same size not vaccinated, 23 later developed Ebola. Only one person who was vaccinated had a serious side effect that the researchers think was caused by the jab. Read more of this story at Slashdot.

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Ebola Vaccine Gives 100 Percent Protection, Could Be Readily Available By 2018

China Claims Tests of ‘Reactionless’ EM Drive Were Successful

An anonymous reader quotes a report from Popular Science: The “reactionless” Electromagnetic Drive, or EmDrive for short, is an engine propelled solely by electromagnetic radiation confined in a microwave cavity. Such an engine would violate the law of conservation of momentum by generating mechanical action without exchanging matter. But since 2010, both the United States and China have been pouring serious resources into these seemingly impossible engines. And now China claims its made a key breakthrough. Dr. Chen Yue, Director of Commercial Satellite Technology for the China Academy of Space Technology (CAST) announced on December 10, 2016 that not only has China successfully tested EmDrives technology in its laboratories, but that a proof-of-concept is currently undergoing zero-g testing in orbit (according to the International Business Times, this test is taking place on the Tiangong 2 space station). If China is able to install EmDrives on its satellites for orbital maneuvering and altitude control, they would become cheaper and longer lasting. Li Feng, lead CAST designer for commercial satellites, states that the current EmDrive has only a thrust of single digit millinewtons, for orbital adjustment; a medium sized satellite needs 0.1-1 Newtons. A functional EmDrive would also open up new possibilities for long range Chinese interplanetary probes beyond the Asteroid belt, as well freeing up the mass taken up by fuel in manned spacecraft for other supplies and equipment to build lunar and Martian bases. On the military side of things, EmDrives could also be used to create stealthier, longer lasting Chinese surveillance satellites. Read more of this story at Slashdot.

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China Claims Tests of ‘Reactionless’ EM Drive Were Successful