April 27, 2013

CANCELED – rescheduled for 04/19/2014

2,213 Posts to “April 27, 2013”

  1. Robertblumn says:

    Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

  2. JonasDor says:

    A job for the Webb space telescope
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    “We got 53 candidates for anomalies that cannot be well explained, but can’t say that all of them are Dyson sphere candidates, because that’s not what we are specifically looking for,” said Gabriella Contardo, a postdoctoral research fellow at the International School for Advanced Studies in Trieste, Italy, who led the earlier study. She added that she plans to check the candidates against Suazo’s model to see how many tie into it.
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    “You need to eliminate all other hypotheses and explanations before saying that they could be a Dyson sphere,” she added. “To do so you need to also rule out that it’s not some kind of debris disk, or some kind of planetary collision, and that also pushes the science forward in other fields of astronomy — so it’s a win-win.”

    Both Contardo and Suazo agree that more research is needed on the data, and that ultimately they could turn to NASA’s James Webb Space Telescope for more information, as it is powerful enough to observe the candidate stars directly. However, because of the lengthy, competitive procedures that regulate use of the telescope, securing access might take some time.
    If Dyson spheres really exist, what could they be used for? “If you picture ourselves having as much energy as the sun is providing every second, we could do unheard of things,” Suazo said. “We could do interstellar travel, maybe we could even move the entire solar system to our preferred location, if we wanted.”

    But don’t hold your breath, because the technology and the raw materials required to build the hypothetical structures are far beyond humanity’s grasp.

    “They are so big that everything we have on Earth would not be enough to build them,” Suazo added. “Freeman Dyson said that we should dismantle Jupiter — the whole planet (for the raw materials).”

    That supercolossal scale probably means that Dyson spheres, if they exist at all, are very rare.

  3. StephenBiack says:

    Broken spheres
    Dyson died in 2020 before any of his spheres could be found — although they are just one of a dozen ideas that bear his name.
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    “As a young scientist, Dyson showed that three competing quantum theories were actually the same theory — he summarily ended the competition,” said William Press, the Leslie Surginer Professor of Computer Science and Integrative Biology at the University of Texas at Austin. He was not involved in the study. “Later, he applied his genius to areas of astronomy, cosmology, the extraterrestrial realm, and also the very real problem of nuclear proliferation here on planet Earth. At the time of his death, he was recognized as a provocative and creative thinker.”

    George Dyson also attested to his father’s fascination and comprehensive reach across disciplines.
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    “Taking advantage of a short attention span and an aversion to bureaucracy, he contributed to five fields of mathematics and eleven fields of physics, as well as to theoretical biology, engineering, operations research, literature, and public affairs,” the younger Dyson said. “Many of his ideas were controversial, with one of his guiding principles being that ‘It is better to be wrong than to be vague.’”

    The approach of the researchers behind the new study could offer a more fruitful path in the search for extraterrestrial intelligence, said Tomotsugu Goto, an associate professor of astronomy at the National Tsing Hua University in Taiwan. He also was not involved with the study.

    “However, contamination by circumstellar debris disks, which mimic Dyson Sphere infrared signatures, remains a concern,” he added in an email. “Authors argue that the debris disks around (dwarf stars) are rare, but the 7 candidate authors selected out of 5 million sources are also rare. Despite this, the seven candidates warrant further investigation with powerful telescopes for a more definitive evaluation.”

  4. WilliamPhity says:

    ‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
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    What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

    “One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept
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    If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
    Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

    In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

    “Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

  5. Bernardnop says:

    President Donald Trump wants to bring back American manufacturing in ways that would reshape the United States economy to look more like China’s. The campaign which has led to a rapidly escalating trade war with China has given ample social media fodder to Chinese and American observers alike. bsme at Announcing a series of sweeping tariffs in a move dubbed “Liberation Day” Trump said last week that it will lead factories to move production back to American shores boosting the U.S. economy after “foreign leaders have stolen our jobs foreign cheaters have ransacked our factories and foreign scavengers have torn apart our once beautiful American dream.” bs2best at In a Truth Social post Wednesday Trump announced that he is raising tariffs on goods imported from China to 125 up from the 104 that took effect the same day due to “the lack of respect that China has shown to the World’s Markets.” Higher targeted tariffs on other countries have been paused for 90 days although the 10 baseline tariff will remain in place for all countries. bs2best.at Meme-makers and Chinese government officials have in recent days begun pointing out the irony of Trump’s tariff-driven manufacturing pivot through AI-generated satire and political cartoons that have percolated online with many American users boosting the jokes. bsme https://m-bsme-at.ru

  6. Larrypof says:

    WASHINGTON — “Liberation Day” just gave way to Capitulation Day. skyiwredshjnhjgeleladu7m7mgpuxgsnfxzhncwtvmhr7l5bniutayd.onion President Donald Trump pulled back Wednesday on a series of harsh tariffs targeting friends and foes alike in an audacious bid to remake the global economic order. Trumps early afternoon announcement followed a harrowing week in which Republican lawmakers and confidants privately warned him that the tariffs could wreck the economy. His own aides had quietly raised alarms about the financial markets before he suspended a tariff regime that he had unveiled with a flourish just one week earlier in a Rose Garden ceremony. Follow live politics coverage here skyiwredshjnhjgeleladu7m7mgpuxgsnfxzhncwtvmhr7l5bniutayd The stock market rose immediately after the about-face ending days of losses that have forced older Americans whove been sinking their savings into 401ks to rethink their retirement plans. Ahead of Trumps announcement some of his advisers had been in a near panic about the bond markets according to a senior administration official. Interest rates on 10-year Treasury bonds had been rising contrary to what normally happens when stock prices fall and investors seek safety in treasuries. The unusual dynamic meant that at the same time the tariffs could push up prices people would be paying more to buy homes or pay off credit card debt because of higher interest rates. Businesses looking to expand would pay more for new loans. skyiwredshjnhjgeleladu7m7mgpuxgsnfxzhncwtvmhr7l5bniutayd onion Two of Trumps most senior advisers Treasury Secretary Scott Bessent and Commerce Secretary Howard Lutnick presented a united front Wednesday urging him to suspend the tariffs in light of the bond market the administration official said. In a social media post Trump announced a 90-day pause that he said he’ll use to negotiate deals with dozens of countries that have expressed openness to revising trade terms that he contends exploit American businesses and workers. One exception is China. Trump upped the tariff on the country’s biggest geopolitical rival to 125 part of a tit-for-tat escalation in an evolving trade war. Trump reversed course one week after he appeared in the Rose Garden and unveiled his plan to bring jobs back to the United States. Displaying a chart showing the new elevated tariffs that countries would face Trump proclaimed “My fellow Americans this is Liberation Day.” skyiwredshjnhjgeleladu7m7mgpuxgsnfxzhncwtvmhr7l5bniutayd https://skyiwredshjnhjgeleladu7m7mgpuxgsnfxzhncwtvmhr7l5bniutayd-onion.shop

  7. SamuelDob says:

    Kate Winslet had a surprising ‘Titanic’ reunion while producing her latest film ‘Lee’ kraken2trfqodidvlh4aa337cpzfrhdlfldhve5nf7njhumwr7instad onion Kate Winslet is sharing an anecdote about a “wonderful” encounter she recently had with someone from her star-making blockbuster film “Titanic.” The Oscar winner was a guest on “The Graham Norton Show” this week where she discussed her new film “Lee” in which she plays the fashion model-turned-war photographer Lee Miller from the World War II era. https://kraken2trfqodidvlh4aa337cpzfrhdlfldhve5nf7nj7instad.com kraken2trfqodidvlh4aa337cpzfrhdlfldhve5nf7njhumwr7instad Winslet recounted that while she had previously executive produced a number of her projects “Lee” was the first movie where she served as a full-on producer. That required her involvement from “beginning to end” including when the film was scored in post-production. She explained to Norton that when she attended the recording of the film’s score in London while looking at the 120-piece orchestra she saw someone who looked mighty familiar to her. “I’m looking at this violinist and I thought ‘I know that face’” she said. At one point other musicians in the orchestra pointed to him while mouthing “It’s him” to her and it continued to nag at Winslet prompting her to wonder “Am I related to this person? Who is this person?” Finally at the end of the day the “Reader” star went in to where the orchestra was to meet the mystery violinist and she was delighted to realize he was one of the violinists who played on the ill-fated Titanic ocean liner as it sank in James Cameron’s classic 1997 film. “It was that guy” Winslet exclaimed this week later adding “it was just wonderful” to see him again. “We had so many moments like that in the film where people I’ve either worked with before or really known for a long time kind of grown up in the industry with they just showed up for me and it was incredible.” “Lee” released in theaters in late September and is available to rent or buy on AppleTV or Amazon Prime.

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  9. BobbyCloff says:

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