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Slashdot Stories Firehose All Popular Polls Ask EventsSoftware Newsletter Jobs Submit Search Slashdot Login or Sign up Topics: Devices Build Entertainment Technology Open Source Science YRO more...Follow us: RSS Facebook LinkedIn Twitter Youtube Mastodon Newsletter Follow Slashdot blog updates by subscribing to our blog RSS feed Nickname: Password: Public Terminal Forgot your password? Close binspam dupe notthebest offtopic slownewsday stale stupid fresh funny insightful interesting maybe offtopic flamebait troll redundant overrated insightful interesting informative funny underrated descriptive typo dupe error !Sign up for the Slashdot newsletter! OR check out the new Slashdot job board to browse remote jobs or jobs in your area Do you develop on GitHub? You can keep using GitHub but automatically sync your GitHub releases to SourceForge quickly and easily with this tool so your projects have a backup location, and get your project in front of SourceForge’s nearly 20 million monthly users. It takes less than a minute. Get new users downloading your project releases today! × 173862359 story First Person To Receive a Genetically Modified Pig Kidney Transplant Dies (npr.org) 2323 Posted by BeauHD on Monday May 13, 2024 @04:40PM from the helping-to-advance-science dept. An anonymous reader quotes a report from CBS News: Richard "Rick" Slayman, the first human to receive a genetically modified pig kidney transplant, has died almost two months after the procedure . Slayman, who had end-stage kidney disease, underwent the transplant in March at Massachusetts General Hospital in Boston at age 62. The hospital said in a statement on Saturday that there was "no indication" that his death was the result of the transplant. The transplant surgeon had said he hoped the transplant would function for at least two years. "The Mass General transplant team is deeply saddened at the sudden passing of Mr. Rick Slayman," read the hospital statement. "Mr. Slayman will forever be seen as a beacon of hope to countless transplant patients worldwide and we are deeply grateful for his trust and willingness to advance the field of xenotransplantation ." The surgery was a milestone for the field of xenotransplantationthe transplant of organs from one species to anotheras a way to alleviate the organ shortage for people who need transplants. The effort to genetically modify animal organs is in hopes that the human body will not reject the foreign tissue. NPR notes that there are more than 100,000 people in the U.S. on the waitlist for organs.173849709 story Webb Telescope Finds a (Hot) Earth-Sized Planet With an Atmosphere (apnews.com) 2525 Posted by EditorDavid on Sunday May 12, 2024 @03:34PM from the forbidden-planet dept. An anonymous reader shared this report from the Associated Press : A thick atmosphere has been detected around a planet that’s twice as big as Earth in a nearby solar system, researchers reported Wednesday. The so-called super Earth — known as 55 Cancri e — is among the few rocky planets outside our solar system with a significant atmosphere, wrapped in a blanket of carbon dioxide and carbon monoxide. The exact amounts are unclear. Earth’s atmosphere is a blend of nitrogen, oxygen, argon and other gases. "It’s probably the firmest evidence yet that this planet has an atmosphere," said Ian Crossfield, an astronomer at the University of Kansas who studies exoplanets and was not involved with the research. The research was published in the journal Nature . "The boiling temperatures on this planet — which can reach as hot as 4,200 degrees Fahrenheit (2,300 degrees Celsius) — mean that it is unlikely to host life," the article points out. "Instead, scientists say the discovery is a promising sign that other such rocky planets with thick atmospheres could exist that may be more hospitable."173844511 story Is Dark Matter’s Main Rival Theory Dead? (theconversation.com) 8080 Posted by EditorDavid on Sunday May 12, 2024 @12:34PM from the Mond-memories dept. "One of the biggest mysteries in astrophysics today is that the forces in galaxies do not seem to add up," write two U.K. researchers in the Conversation : Galaxies rotate much faster than predicted by applying Newton’s law of gravity to their visible matter, despite those laws working well everywhere in the Solar System. To prevent galaxies from flying apart, some additional gravity is needed. This is why the idea of an invisible substance called dark matter was first proposed. But nobody has ever seen the stuff. And there are no particles in the hugely successful Standard Model of particle physics that could be the dark matter — it must be something quite exotic. This has led to the rival idea that the galactic discrepancies are caused instead by a breakdown of Newton’s laws. The most successful such idea is known as Milgromian dynamics or Mond [also known as modified Newtonian dynamics], proposed by Israeli physicist Mordehai Milgrom in 1982. But our recent research shows this theory is in trouble... Due to a quirk of Mond, the gravity from the rest of our galaxy should cause Saturn’s orbit to deviate from the Newtonian expectation in a subtle way. This can be tested by timing radio pulses between Earth and Cassini. Since Cassini was orbiting Saturn, this helped to measure the Earth-Saturn distance and allowed us to precisely track Saturn’s orbit. But Cassini did not find any anomaly of the kind expected in Mond. Newton still works well for Saturn... Another test is provided by wide binary stars — two stars that orbit a shared centre several thousand AU apart. Mond predicted that such stars should orbit around each other 20% faster than expected with Newton’s laws. But one of us, Indranil Banik, recently led a very detailed study that rules out this prediction. The chance of Mond being right given these results is the same as a fair coin landing heads up 190 times in a row. Results from yet another team show that Mond also fails to explain small bodies in the distant outer Solar System... The standard dark matter model of cosmology isn’t perfect, however. There are things it struggles to explain , from the universe’s expansion rate to giant cosmic structures. So we may not yet have the perfect model. It seems dark matter is here to stay, but its nature may be different to what the Standard Model suggests. Or gravity may indeed be stronger than we think — but on very large scales only. "Ultimately though, Mond, as presently formulated, cannot be considered a viable alternative to dark matter any more," the researchers conclude. "We may not like it, but the dark side still holds sway."173841777 story Could Stem Cells One Day Cure Diabetes? (medscape.com) 4242 Posted by EditorDavid on Saturday May 11, 2024 @04:34PM from the cell-or-bye dept. Brian Shelton’s type 1 diabetes was treated with an infusion of insulin-producing pancreas cells (grown from stem cells). In 2021, the New York Times reported : Now his body automatically controls its insulin and blood sugar levels. Shelton, now 64, may be the first person cured of the disease with a new treatment that has experts daring to hope that help may be coming for many of the 1.5 million Americans suffering from Type 1 diabetes. "It’s a whole new life," Shelton said. Diabetes experts were astonished but urged caution. The study is continuing and will take five years, involving 17 people with Type 1 diabetes. "By fall 2023, three patients, including Shelton, had achieved insulin independence by day 180 post-transplant," MedScape reported (in January of 2024): In the phase 1/2 study, 14 patients with type 1 diabetes and impaired hypoglycemia awareness or recurrent hypoglycemia received portal vein infusions of VX-880 [Vertex Pharmaceutical’s pancreatic islet cell replacement therapy] along with standard immunosuppression. As of the last data cut, all 14 patients demonstrated islet cell engraftment and production of endogenous insulin. After more than 90 days of...