Logic hacking - "Writing shorter and shorter computer programs for which it's unknowable whether these programs run forever, or stop... the winner of the Busy Beaver Game for N-state Turing machines becomes unknowable using ordinary math - somewhere between N = 5 and N = 1919." [more inside]
Alaska is Having Its Hottest Year Since Records Began - "After a spring that was a full ten degrees hotter than normal, the northern state is on track for the most sweltering year on record." (via) [more inside]
In his follow-up to Sapiens, Yuval Noah Harari envisions what a 'useless class' of humans might look like as AI advances and spreads - "I'm aware that these kinds of forecasts have been around for at least 200 years, from the beginning of the Industrial Revolution, and they never came true so far. It's basically the boy who cried wolf, but in the original story of the boy who cried wolf, in the end, the wolf actually comes, and I think that is true this time." [more inside]
Generation Anthropocene: How Humans Have Altered the Planet for Ever. by Robert Macfarlane [The Guardian] We are living in the Anthropocene age, in which human influence on the planet is so profound – and terrifying – it will leave its legacy for millennia. Politicians and scientists have had their say, but how are writers and artists responding to this crisis?
An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally coming into focus , according to the journal Nature. [more inside]
"When Hadza want to find honey, they shout and whistle a special tune. If a honeyguide is around, it’ll fly into the camp, chattering and fanning out its feathers. The Hadza, now on the hunt, chase it, grabbing their axes and torches and shouting “Wait!” They follow the honeyguide until it lands near its payload spot, pinpoint the correct tree, smoke out the bees, hack it open, and free the sweet combs from the nest. The honeyguide stays and watches. It’s one of those stories that sounds like a fable—until you get to the end, where the lesson normally goes. Then it becomes a bit more confusing."
"Don't look at them directly,” Rie Henriksen whispers, “otherwise they get suspicious.” The neuroscientist is referring to a dozen or so chickens loitering just a few metres away in the car park of a scenic observation point for Opaekaa Falls on the island of Kauai, Hawaii. As the two try to act casual by their rented car, a jet-black hen with splashes of iridescent green feathers pecks its way along a trail of bird feed up to a device called a goal trap. Wright tugs at a string looped around his big toe and a spring-loaded net snaps over the bird. After a moment of stunned silence, the hen erupts into squawking fury. Biologists see in the feral animals an improbable experiment in evolution: what happens when chickens go wild?[more inside]
We have identified ten red-flag areas that can help to differentiate healthy debate, problematic research practices and campaigns that masquerade as scientific inquiry. None by itself is conclusive, but a preponderance of troubling signs can help to steer the responses of scientists and their institutions to criticism.
For most of human history . . . [i]t was unthinkable to ignore the stars. They were critical signposts, as prominent and useful as local hills, paths or wells. The gathering-up of stars into constellations imbued with mythological meaning allowed people to remember the sky; knowledge that might save their lives one night and guide them home. Lore of the sky bound communities together. On otherwise trackless seas and deserts, the familiar stars would also serve as a valued friend. That friendship is now broken.
“Imagine a therapy that had no known side effects, was readily available, and could improve your cognitive functioning at zero cost,” the researchers wrote in their paper. It exists, they continued, and it’s called “interacting with nature.”
Last April, motivated by rumors of a Chinese paper published the next month that physically demonstrated the technical feasibility of editing human germline DNA with CRISPR by successfully modifying human embryos, a coalition of well regarded scientists assembled to address this fundamentally new ability and they called for an international summit. It was to be billed as a new Asilomar Conference on Recombinant DNA for a new age in order to lead a new global conversation on questions of whether and how to control human inheritance, which could only be dreamed of 40 years ago. This is a fundamental departure from the non-inheritable gene engineering with CRISPR covered on the blue recently. Thus, from December 1-3, the International Summit on Human Gene Editing, held as a collaborative effort between U.S. National Academy of Sciences and National Academy of Medicine, the Chinese Academy of Sciences, and The Royal Society, met to discuss the future of this technology and has come out with a clear consensus statement. [more inside]
Sapiens: A Brief History of Humankind by Yuval Noah Harari - "The book delivers on its madly ambitious subtitle by in fact managing to cover key moments in the developmental history of humankind from the emergence of Homo Sapiens to today's developments in genetic engineering." Also btw, check out Harari on the myths we need to survive, re: fact/value distinctions and their interrelationships.
A study published in the journal Animal Behavior found that crows can recognize their fellow dead crows and learn to avoid the dangerous circumstances associated with death. The BBC described the study, which involved a "masked individual playing bad cop, arriving on the scene holding up a dead crow." [more inside]
Some Paths to the True Knowledge[*] - "Attention conservation notice: A 5000+ word attempt to provide real ancestors and support for an imaginary ideology I don't actually accept, drawing on fields in which I am in no way an expert. Contains long quotations from even-longer-dead writers, reckless extrapolation from arcane scientific theories, and an unwarranted tone of patiently explaining harsh, basic truths. Altogether, academic in one of the worst senses. Also, spoilers for several of MacLeod's novels, notably but not just The Cassini Division. Written for, and cross-posted to, Crooked Timber's seminar on MacLeod, where I will not be reading the comments."
Frank Wilczek: Physics in 100 Years [pdf] - "Here I indulge in wide-ranging speculations on the shape of physics, and technology closely related to physics, over the next one hundred years. Themes include the many faces of unification, the re-imagining of quantum theory, and new forms of engineering on small, intermediate, and large scales." [more inside]
Editor quits journal over pay-for-expedited peer-review offer "With a tweet yesterday, an editor of Scientific Reports, one of Nature Publishing Group’s open-access journals, has resigned in a very public protest of NPG’s recent decision to allow authors to pay money to expedite peer review of their submitted papers. "
Wild Ones Live is an arresting reading accompanied by music, a collaboration performed as part of a live magazine by author Jon Mooallem, a science and nature writer whose book Wild Ones ruminates on the strange, ignorant, hopeful and poignant ways humans imagine other animals, and the musical project Black Prairie. Listen at your desk if you must, but if you can, pop in your earbuds and go outside for a long walk while you take it all in. [more inside]
Locked-In Man - "Martin Pistorius spent more than a decade unable to move or communicate, fearing he would be alone, trapped, forever. NPR's new show Invisibilia tells how his mind helped him create a new life."
The AMNH team preserving Lonesome George for display. As the last known Pinta Island tortoise, Lonesome George became a worldwide icon of conservation decades before he died from natural causes in the Galápagos in 2012. When Lonesome George arrived at the American Museum of Natural History in early 2013 to be preserved as a taxidermic specimen, Museum scientists and a master taxidermist faced a number of crucial decisions as they worked to prepare a mount that was both scientifically accurate and beautiful. [more inside]
"It was always assumed that V-formation flight was learned from the adult birds. But these guys are all the same age and they learned to fly from a human in a microlight. They learned V-formation flying from each other. National Geographic reports on some of the fascinating intricacies of the V formation observed in migrating birds.
Koryos, who previously explained how cats got domesticated using tumblr, now explains why homosexual pair-bonding can be a successful reproductive stratagem. Also, Coot Parenting Tips, Queen Cowbird Of The Brood Parasites , There's No Such Thing As An Alpha Wolf, and Can Animals Have Pets?
Norbert Wiener: The Eccentric Genius Whose Time May Have Finally Come (Again) - "The most direct reason for Wiener's fall to relative obscurity was the breakthrough of a young mathematician and engineer named Claude Shannon." [more inside]
The American Museum of Natural History will unlock thousands of old photos from their vault, they announced this week. The new online image database (officially launching on Monday the 28th) will take you behind the curtain, delivering images that span the 145-year history of the Museum. The collection features over 7,000 images—many never before seen by the public—and includes photos, rare book illustrations, drawings, notes, letters, art, and Museum memorabilia. They say "it’s like stepping into a time machine and seeing a long ago NYC or just catching glimpses of ghosts from a forgotten world now seen only by researchers and Museum staff." Previously. [more inside]
UN Climate Report: We Must Focus On 'Decarbonization', and It Won't Wreck the Economy - "The basic message is simple: We share a planet. Let's start acting like it." [more inside]
Such as Ulva lobata from Josie Iselin's new book An Ocean Garden: The Secret Life of Seaweed.
Feather boa kelp - Egregia menziesii
Sea grapes - Botryocladia pseudodichotoma [more inside]
Feather boa kelp - Egregia menziesii
Sea grapes - Botryocladia pseudodichotoma [more inside]
Network Theory Overview - "The idea: nature and the world of human technology are full of networks! People like to draw diagrams of networks. Mathematical physicists know that in principle these diagrams can be understood using category theory. But why should physicists have all the fun? This is the century of understanding living systems and adapting to life on a finite planet. Math isn't the main thing we need, but it's got to be part of the solution... so one thing we should do is develop a unified and powerful theory of networks." (via ;)
Open warfare erupts in the world of mathematical biology, as Lior Pachter of UC-Berkeley writes three blog posts attacking two papers in Nature Bioscience, accusing one of them of being "dishonest and fraudulent": The Network Nonsense of Albert-Laszlo Barabasi, The Network Nonsense of Manolo Kellis, and Why I Read the Network Nonsense Papers. Kellis (MIT) and his co-authors respond (.pdf.)
Closing in on the twin prime conjecture (Quanta) - "Just months after Zhang announced his result, Maynard has presented an independent proof that pushes the gap down to 600. A new Polymath project is in the planning stages, to try to combine the collaboration's techniques with Maynard's approach to push this bound even lower." [more inside]
CreatureCast - Rhizocephala - a charmingly animated look at the lifecycle of rhizocephalan barnacles, one of the more horrifying (non-charming) parasitic crustaceans (likewise). NOT a practitioner of parasitic castration but still disturbing: The bobbit worm. Happy swimming!
"This is a story, a picture story, of two very lucky people before whom was spread out the greatest of treasures, the planet Earth. We traveled aboard a magic carpet, the one with the yellow borders, National Geographic magazine. During four decades we wandered over all the continents and left wakes across the seven seas." [more inside]
Cheetahs’ Secret Weapon: A Tight Turning Radius [New York Times]
"Anyone who has watched a cheetah run down an antelope knows that these cats are impressively fast. But it turns out that speed is not the secret to their prodigious hunting skills: a novel study of how cheetahs chase prey in the wild shows that it is their agility — their skill at leaping sideways, changing directions abruptly and slowing down quickly — that gives those antelope such bad odds."
Is Psychometric g a Myth? - "As an online discussion about IQ or general intelligence grows longer, the probability of someone linking to statistician Cosma Shalizi's essay g, a Statistical Myth approaches 1. Usually the link is accompanied by an assertion to the effect that Shalizi offers a definitive refutation of the concept of general mental ability, or psychometric g." [more inside]
The concept of nothing is as old as zero itself. How do we grapple with the concept of nothing? From the best laboratory vacuums on Earth to the vacuum of space to what lies beyond, the idea of nothing continues to intrigue professionals and the public alike. Join moderator and Hayden Planetarium Director Neil deGrasse Tyson as he leads a spirited discussion with a group of physicists, philosophers and journalists about the existence of nothing. The event, which was streamed live to the web, took place at the American Museum of Natural History on March 20, 2013. [more inside]
Charley Harper's "minimal realism" contributions to science and art are being celebrated by the graphic design blog Codex 99. Part 1 - Charley and Edie. Part 2 - The Birds. Part 3 - Tin Lizzie and Dinner for Two. Part 4 - The Golden Book of Biology. Part 5 - Bambi and Childcraft. Part 6 - The Animal Kingdom.
The Nature of Computation - Intellects Vast and Warm and Sympathetic: "I hand you a network or graph, and ask whether there is a path through the network that crosses each edge exactly once, returning to its starting point. (That is, I ask whether there is a 'Eulerian' cycle.) Then I hand you another network, and ask whether there is a path which visits each node exactly once. (That is, I ask whether there is a 'Hamiltonian' cycle.) How hard is it to answer me?" (via) [more inside]
Nature constantly engineers new and creative solutions to all sorts of problems—turning our stereotypes about sex upside-down along the way.
There are fewer microbes out there than you think. New estimate reduces the number of microbes on Earth by around half. [more inside]
First Evidence Found for Photosynthesis in Insects: [nature.com] "The biology of aphids is bizarre: they can be born pregnant and males sometimes lack mouths, causing them to die not long after mating. In an addition to their list of anomalies, work published this week indicates that they may also capture sunlight and use the energy for metabolic purposes."
North Americans may have noticed that U-Haul trucks and trailers are emblazoned with colorful SuperGraphics. First created in 1988 (previously), the mobile gallery now comprises 206 images. Most U.S states and Canadian territories and provinces are now honored by multiple designs, as are the U.S. armed forces and 9/11. The classic America and Canada's Moving Adventure series, seen on trucks and trailers, features an iconic image for each state, province and territory. The Venture Across America and Canada series, begun in 1997, presents "carefully researched rare findings, little-known facts and mysteries," exploring science and nature, technology and history. At the U-Haul website, the "Learn More" link on each Venture SuperGraphic page leads to a surprisingly exhaustive discussion of the subject of each graphic. [more inside]
Morton and Vicary on the Categorified Heisenberg Algebra - "In quantum mechanics, position times momentum does not equal momentum times position! This sounds weird, but it's connected to a very simple fact. Suppose you have a box with some balls in it, and you have the magical ability to create and annihilate balls. Then there's one more way to create a ball and then annihilate one, than to annihilate one and then create one. Huh? Yes: if there are, say, 3 balls in the box to start with, there are 4 balls you can choose to annihilate after you've created one but only 3 before you create one..." [more inside]
"Adrian Owen still gets animated when he talks about patient 23. The patient was only 24 years old when his life was devastated by a car accident. Alive but unresponsive, he had been languishing in what neurologists refer to as a vegetative state for five years, when Owen, a neuro-scientist then at the University of Cambridge, UK, and his colleagues at the University of Liège in Belgium, put him into a functional magnetic resonance imaging (fMRI) machine and started asking him questions. Incredibly, he provided answers."
Are bias and fraud damaging the existing public trust in scientific and medical research? (previously) [more inside]