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nyheder2019november23

Analyse: Med Roundup-forbuddet har folket kørt eksperterne ud på miljøpolitikkens sidelinje

PLUS. Miljøgodkendelser hviler normalt på et fagligt grundlag, men denne uges debat om sprøjtegift er et eksempel på, at politikerne lader sig styre af folkestemning og medier.

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Laura er ikke bange for at sige: 'Nej, det passer dårligt med min menstruationscyklus'

Laura Grubb lever efter sin cyklus, som hun opdeler i fire faser, der påvirker hendes krop og sind forskelligt.

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Changing experiences of the natural world

Digital innovations have the potential to bring people closer to nature, to help ensure there is the necessary strong public support for conservation measures.

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Scientists discover surprising quantum effect in an exotic superconductor

Superconductors are already in use in various capacities, but newer iron-based superconductors have potential for future use. Researchers have studied what happens to the superconducting nature of these materials when impurities are added. The results shed light on how superconductivity behaves in these materials.

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Science underestimated dangerous effects of sleep deprivation

One of the largest sleep studies dubunks theory that suggests attention is the only cognitive function affected by sleep deprivation.

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Pollinator friendliness can extend beyond early spring

A study investigated whether bulbs can flower and persist in warm-season lawns while providing nutrition for pollinating insects.

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Dissecting connections between chronic stress, inflammation and depression

Chronic stress can inflame our brain, destroy the connections between our neurons and result in depression, scientists say.

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How to design and control robots with stretchy, flexible bodies

Researchers have invented a way to efficiently optimize the control and design of soft robots for target tasks, which has traditionally been a monumental undertaking in computation.

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Dung beetle discovery revises biologists' understanding of how nature innovates

The discovery that thoracic horns in dung beetles emerge from the same gene network as wings could revise how biologists understand 'innovation' in nature.

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New twist in quest to develop understanding of time crystalline behavior

The quest to develop the understanding for time crystalline behaviour in quantum systems has taken a new, exciting twist.

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Jeffrey Epstein and the Decadence of Science

The Epstein scandal, which embroiled many prominent scientists, is just one of many signs that a gloomy prophecy is being fulfilled. — Read more on ScientificAmerican.com

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Using artificial intelligence to determine whether immunotherapy is working

Currently, only about 20% of all cancer patients will actually benefit from costly immunotherapy. New research can now determine which ones are in that category, simply by analyzing previously unseen changes in patterns in CT scans taken when the lung cancer is first diagnosed compared to scans taken after the first 2-3 cycles of immunotherapy treatment.

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Cache of mummified cats, lions recently discovered on display at Egyptian pyramid site

A cache of recently discovered mummified cats, cobras, crocodiles, and birds was put on display in Egypt on Saturday as more details were revealed.

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New report finds costs of climate change impacts often underestimated

This is a re-post from Yale Climate Connections Climate economics researchers have often underestimated – sometimes badly underestimated – the costs of damages resulting from climate change. Those underestimates occur particularly in scenarios where Earth's temperature warms beyond the Paris climate target of 1.5 to 2 degrees C (2.7 to 3.6 degrees F). That's the conclusion of a new report written

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Sumatran rhino extinct in Malaysia as lone survivor dies

The Sumatran rhinoceros has become extinct in Malaysia, after the last of the species in the country succumbed to cancer on Saturday.

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Sumatran rhino extinct in Malaysia as lone survivor dies

The Sumatran rhinoceros has become extinct in Malaysia, after the last of the species in the country succumbed to cancer on Saturday.

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Sumatran rhino extinct in Malaysia as lone survivor dies

The Sumatran rhinoceros has become extinct in Malaysia, after the last of the species in the country succumbed to cancer on Saturday.

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Magnetiska stormar – ett fönster till det förflutna

Utflöde av syre från jordens atmosfär ökar med kraftiga solvindar. Under så kallade magnetiska stormar kan jonutflödet öka nästan 100 gånger jämfört med lugna förhållanden. Audrey Schillings, Institutet för rymdfysik och Luleå tekniska universitet samt Forskarskolan i rymdteknik, har nyligen disputerat på en avhandling om hur utflöde av syrejoner från jordens atmosfär påverkas. Utflödet ökar vid

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Will Yellowstone Erupt Soon and Kill Us All?

Let's see what the experts at the Yellowstone Volcano Observatory have to say — Read more on ScientificAmerican.com

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Doctors Put a Patient in Suspended Animation for the First Time

submitted by /u/quietfryit [link] [comments]

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Exxon Former CEO Says Climate Change "With Us Forever More"

submitted by /u/MayonaiseRemover [link] [comments]

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The future that graphene built

submitted by /u/Memetic1 [link] [comments]

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Bill Gates Announces Toilet That Converts Waste Into Fertilizer

submitted by /u/antonlambros [link] [comments]

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Clear, conductive coating could protect advanced solar cells, touch screens

Researchers have improved on a transparent, conductive coating material, producing a tenfold gain in its electrical conductivity. When incorporated into a type of high-efficiency solar cell, the material increased the cell's efficiency and stability.

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Mummified lion and dozens of cats among rare finds in Egypt

Discoveries near Saqqara necropolis shed light on ancient use of animals in worship A rare discovery of mummified big cats, cobras and crocodiles has been unveiled by Egyptian authorities. Egyptologists are thrilled at the cache, which includes dozens of mummified cats, 75 wooden and bronze cat statues, mummified birds, and an enormous mummified beetle three to four times the normal size. Continu

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Report: Whales Are "Nature's Solution to Climate Change"

If we want to halt or even reverse global warming, we need to find a way to get carbon dioxide out of the atmosphere — and increasing the number of whales on Earth might be our best option. For a new International Monetary Fund report titled "Nature's Solution to Climate Change," researchers did the math and found that a single whale absorbs an average of 33 tons of carbon dioxide over the course

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Danske 'rumbukser' skal måle, om astronauter træner rigtigt

Astronauter bruger adskillige timer på at holde deres kroppe i gang ude i rummet.

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This Week's Awesome Tech Stories From Around the Web (Through November 23)

COMPUTING A Giant Superfast AI Chip Is Being Used to Find Better Cancer Drugs Karen Hao | MIT Technology Review "Thus far, Cerebras's computer has checked all the boxes. Thanks to its chip size—it is larger than an iPad and has 1.2 trillion transistors for making calculations—it isn't necessary to hook multiple smaller processors together, which can slow down model training. In testing, it has al

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Space Photos of the Week: Terrific, Tantalizing Titan

It has methane lakes! And an atmosphere! Oh but it's very, very, cold, really cold.

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Weekend reads: Double-dipping with industry funding; a bully is rehired; organized crime scholar charged with money laundering

Before we present this week's Weekend Reads, a question: Do you enjoy our weekly roundup? If so, we could really use your help. Would you consider a tax-deductible donation to support Weekend Reads, and our daily work? Thanks in advance. The week at Retraction Watch featured: A look at why an infamous paper on autism and … Continue reading

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Kæmpe eksplosion i rummet: Gammaglimt slår alle rekorder

Astronomer observerer den kraftigste energiudladning nogensinde.

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*Aliens: No Exit* Writer Brian Evenson Goes Deeper Into Sci-Fi

The literary horror author's new short story collection delves further into genre than any of his previous works.

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Twitter Now Has Better Two-Factor Authentication, So Use It

A hacking bounty, right to repair, and more of the week's top security news.

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Malaysia's last known Sumatran rhino dies

The species is now extinct in Malaysia, with fewer than 100 animals believed to exist elsewhere.

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Old Stegosaur Alters History of Armored Dinosaurs

A skeleton that was kept in storage for 60 years is a Jurassic surprise — Read more on ScientificAmerican.com

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One Way to Be a Muslim Girl in America

Hala , the new film from the writer-director Minhal Baig, is a study in contrasts. The coming-of-age story follows its titular protagonist, a Pakistani American teenager played by Geraldine Viswanathan, as she navigates the confusion of adolescence in the United States. The divides she encounters are apparent almost immediately: parents versus classmates; Pakistan versus America; Islamic tenets v

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Why Did PayPal Pay $4 Billion for a Coupon Browser Extension?

Honey's value may be in its mobile app, which solved a problem retailers have struggled with for years—and could give PayPal an edge.

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TCL 6-Series TV Review: Our Favorite TV of 2019

With top-tier tech and an affordable price tag, TCL's latest 6-Series is the best TV for most people.

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Yancey Strickler (Kickstarter co-founder) – you, me, us: now and in the future

None The phrase "common sense" can be misleading. The way we use it in casual conversation, it means something like "that which is obvious to any sensible person, of course". It's like what philosopher Daniel Dennett says about the word "surely". Surely we can all agree that it's just an innocent word, right? Surely I'm not manipulating you by starting this sentence with a positive conclusion? Co

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We may be closer than we thought to Earth's dangerous tipping points

We know that the climate can start changing irreversibly if it warms past certain thresholds, and these tipping points may strike unexpectedly soon

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Here's Why Many DNA Test Startups Are Basically Scams, Just Like Horoscope Readings

No, your genes can't tell you which wine to drink. Sheesh.

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A Big Silly Cybertruck

If you attended an American elementary school since the end of the last century, you have probably seen an icon called "Cool S." (That is really its name .) It is basically what it sounds like: the 19th letter of the alphabet, rendered so as to be maximally appealing to the Billabong set. Its native habitats include the walls of laser-park bathrooms, the margins of math textbooks, and the forearm

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Text-Savvy AI Is Here to Write Fiction

GPT-2 was once considered "too dangerous" to make public. Now it's taking on National Novel Writing Month.

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The Debate Over How to Encrypt the Internet of Things

So-called lightweight encryption has its place. But some researchers argue that more manufacturers should stick with proven methods.

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Why the Tesla Cybertruck Looks So Weird

The pickup truck Elon Musk unveiled Thursday night features sharp angles, but no side mirrors or "crumple zone" to absorb the force of a collision.

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Historians Find Another Spy in the U.S. Atomic Bomb Project

His Soviet code name was Godsend, and he came to Los Alamos from a family of secret agents.

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France's Growing Pushback Against Roman Polanski

PARIS—The French cultural establishment has defended, protected, and lauded Roman Polanski. The director fled the U.S. in 1978 after pleading guilty to unlawful sexual intercourse with a 13-year-old girl, and has successfully evaded extradition back to the States over the years, most recently in 2016, when Poland rejected the request. But today, the winds are shifting a bit in France. Polanski's

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Foreign Policy Isn't Just Up To Trump

While House Republicans struggled all week to develop a coherent explanation for President Donald Trump's conduct in the Ukraine affair, they coalesced around at least one message they seemed certain would bolster their case. As Representative Elise Stefanik put it: "The person who sets the policy of the United States is the president." In her view— and that of others who made the same case —the

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Does the First Amendment Hold at the Border?

This is the story of an effort to safeguard the First Amendment. In the fall of 2018, five American photojournalists began going on trips to Mexico to gather news about the caravan of Central Americans migrating through that country. At the end of each reporting trip, they returned to the U.S. through official ports of entry. Coming home ought to have been easy. These were law-abiding citizens tr

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Stop the Ethanol Madness

The idea of requiring the nation's gasoline supply to contain a certain amount of renewable biofuel was born in a short-lived doomsday fad of the 1970s. With experts warning that the world was quickly running out of oil, the shocks of '73 and '79 led President Jimmy Carter to call for wartime-style rationing of fuel and other draconian measures to avoid a "national catastrophe." His proposals, fo

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A Woman Missing in the Mountains

A few years back , I created a free taxi service in Shanghai in the hope of meeting a variety of Chinese people to tell the story of the country's rapid transformation through their eyes. I drove scores of passengers and stayed in touch with the most interesting ones, profiling them in radio stories for NPR, where I worked as the Shanghai correspondent. About a year after I started driving, I rec

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OnePlus reveals its second website data breach in two years

Early in 2018, popular cellphone maker OnePlus revealed it had coughed up credit card information on over 40,000 users in a data breach, and now it's informing users of another …

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Intellectual dark matter: What is it, and why is it meaningful?

You're probably familiar with the concept of physical dark matter, but what about intellectual dark matter? In a similar way to the universe's dark-matter makeup, our vast body of knowledge contains a significant amount of information that can't easily be described in words. If knowledge was passed down only through writings or direct experience, society would crumble.

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Moderne damplokomotiver løber 12-13 mil i timen

Hvor personvognene tidligere var snævre og ubekvemme, er waggonerne nu blevet større og for de første klasser udstyret med mere luksus. Vi er gået i arkivet og har fundet en artikel fra 1878.

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We can now settle debates on when ancient people lived using their DNA

It isn't always possible to carbon date old bones, leading researchers to argue about when ancient people lived – using ancient DNA as a dating tool could help

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Tandlossning ökar risken för hjärtsjukdomar

Det finns ett tydligt samband mellan tandlossning, åderförkalkning i halspulsådern och hjärt- och kärlsjukdomar. Därför måste tandvård och sjukvård samverka mer. Det visar en ny avhandling vid Malmö universitet. Viveca Wallin Bengtssons forskning ingår i den nationella äldrestudien The Swedish National Study on Aging and Care – SNAC . Syftet med denna är att kartlägga äldres vårdbehov. Det främst

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Genteknik väcker etiska frågor – ärftliga sjukdomar kommer kunna "klippas" bort

Inom genteknik går utvecklingen snabbt. Det nobelpristippade genverktyget Crispr gör det idag möjligt att redigera gener – det vill säga att klippa och klistra i arvsmassan. Med hjälp av verktyget hoppas forskare kunna behandla och stoppa sjukdomar inom en snar framtid.

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Ugens debat: IT-specialister sværger til papir

Når MitID i 2021 afløser NemID, bliver det uden det velkendte nøglekort af pap, men i stedet med autentifikation baseret på en app. Den melding har bragt mange læsere af Version2 op i det røde felt.

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Amazon sues Pentagon over $10B contract awarded to Microsoft

Amazon is suing the Pentagon over a $10 billion cloud-computing contract awarded to Microsoft.

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Students accuse Cambridge university of 'greenwashing' ties with oil firms

Activists call Cambridge Zero initiative a 'PR stunt to divert attention from links to fossil fuel industry' Student activists at Cambridge have accused the university of attempting to greenwash its relationship with oil and gas firms by stealing their group's name for a project led by an academic linked to the fossil fuel industry. Cambridge University is to launch its Cambridge Zero initiative

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First in vitro Puerto Rico crested toad gives scientists hope

A critically endangered Puerto Rican toad was for the first time born via in vitro fertilization as U.S. scientists attempt to save it from extinction, officials announced Friday.

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First in vitro Puerto Rico crested toad gives scientists hope

A critically endangered Puerto Rican toad was for the first time born via in vitro fertilization as U.S. scientists attempt to save it from extinction, officials announced Friday.

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The secret to Trump's success? It's sheer existential dread | Sheldon Solomon

Authoritarian populist leaders thrive on the fear of death – as we've been able to show in carefully controlled experiments In a recent experiment, American participants were asked: "Please describe the emotions that the thought of your own death arouses in you" and "Write down as specifically as you can what you think will happen to you physically as you die and once you are dead." Moments later

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These Homes Are 3D-PRINTED | [FUTURE BLINK]

submitted by /u/mind_bomber [link] [comments]

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El Nino swings more violently in the industrial age, compelling hard evidence says

El Ninos have become more intense in the industrial age, which stands to worsen storms, drought, and coral bleaching in El Nino years. A new study has found compelling evidence in the Pacific Ocean that the stronger El Ninos are part of a climate pattern that is new and strange.

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Using artificial intelligence to determine whether immunotherapy is working

Currently, only about 20% of all cancer patients will actually benefit from costly immunotherapy. New research can now determine which ones are in that category, simply by analyzing previously unseen changes in patterns in CT scans taken when the lung cancer is first diagnosed compared to scans taken after the first 2-3 cycles of immunotherapy treatment.

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Genteknik – ett hjälpmedel för att återskapa utdöda arter?

Med hjälp av genredigering av växter och djur hoppas forskarna på att i framtiden kunna rädda arter som håller på att dö ut. Gentekniken skulle till och med kunna få utdöda arter – som mammutarna – att komma tillbaka. Spela videon för att se hur forskningen ser ut.

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Ny utredning: "Sänk gränsvärdena för alla kemikalier"

Blandningar av kemikalier kan påverka oss mer än vad varje enskilt ämne gör. En ny kemikalieutredning föreslår nu en drastisk sänkning av gränsvärdena för alla kemikalier.

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Därför är det så svårt att stoppa spridningen av kemikalier

En ny kemikalieutredning föreslår att gränsvärdena för alla kemikalier ska sänkas radikalt. Spela klippet för att se varför är det så svårt att reglera kemikalieanvändningen.

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Diversification rates, clade ages, and macroevolutionary methods [Letters (Online Only)]

Henao Diaz et al. (1), hereafter HDEA, claim to find a "hidden generality" about macroevolutionary rates, specifically, that diversification rates are faster in younger clades. However, this pattern was far from hidden. It was previously shown across the tree of life in a paper (2) cited by HDEA, but with…

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Reply to Wiens and Scholl: The time dependency of diversification rates is a widely observed phenomenon [Letters (Online Only)]

In their comment on our recent paper (1), Wiens and Scholl (2) raise 2 points that are hard to reconcile with one another: First, they argue that one of our primary findings—of the time dependency of diversification rate estimates—was also reported by them and, second, that the methods we used…

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Social behavior for autonomous vehicles [Psychological and Cognitive Sciences]

Deployment of autonomous vehicles on public roads promises increased efficiency and safety. It requires understanding the intent of human drivers and adapting to their driving styles. Autonomous vehicles must also behave in safe and predictable ways without requiring explicit communication. We integrate tools from social psychology into autonomous-vehicle decision making…

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Single-molecule imaging of HIV-1 envelope glycoprotein dynamics and Gag lattice association exposes determinants responsible for virus incorporation [Microbiology]

The HIV-1 envelope glycoprotein (Env) is sparsely incorporated onto assembling virus particles on the host cell plasma membrane in order for the virus to balance infectivity and evade the immune response. Env becomes trapped in a nascent particle on encounter with the polymeric viral protein Gag, which forms a dense…

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The conical shape of DIM lipids promotes Mycobacterium tuberculosis infection of macrophages [Biophysics and Computational Biology]

Phthiocerol dimycocerosate (DIM) is a major virulence factor of the pathogen Mycobacterium tuberculosis (Mtb). While this lipid promotes the entry of Mtb into macrophages, which occurs via phagocytosis, its molecular mechanism of action is unknown. Here, we combined biophysical, cell biology, and modeling approaches to reveal the molecular mechanism of…

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Quelling germ cell pluripotency on the genital ridge [Commentaries]

The most critical step of mammalian embryogenesis in securing the future of the species comes just days after fertilization, and immediately after implantation into the uterine wall. At this time, a small subset of epiblast cells receives an inductive signal from neighboring extraembryonic tissue, the germ lineage is specified, and…

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Mycobacterium tuberculosis enters macrophages with aid from a bacterial lipid [Commentaries]

In the paper titled "The conical shape of DIM lipids promotes Mycobacterium tuberculosis infection of macrophages" in PNAS, Augenstreich et al. (1) report on molecular mechanisms underlying the virulence of Mycobacterium tuberculosis bacteria (Mtb) expressing phthiocerol dimycocerosate (DIM), a well-known constituent in the cell wall of Mtb (2–4). A critical…

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Resolving titin's lifecycle and the spatial organization of protein turnover in mouse cardiomyocytes [Cell Biology]

Cardiac protein homeostasis, sarcomere assembly, and integration of titin as the sarcomeric backbone are tightly regulated to facilitate adaptation and repair. Very little is known on how the >3-MDa titin protein is synthesized, moved, inserted into sarcomeres, detached, and degraded. Here, we generated a bifluorescently labeled knockin mouse to simultaneously…

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Chromosome disentanglement driven via optimal compaction of loop-extruded brush structures [Biophysics and Computational Biology]

Eukaryote cell division features a chromosome compaction–decompaction cycle that is synchronized with their physical and topological segregation. It has been proposed that lengthwise compaction of chromatin into mitotic chromosomes via loop extrusion underlies the compaction-segregation/resolution process. We analyze this disentanglement scheme via considering the chromosome to be a succession of.

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Distinct metabolic adaptation of liver circadian pathways to acute and chronic patterns of alcohol intake [Medical Sciences]

Binge drinking and chronic exposure to ethanol contribute to alcoholic liver diseases (ALDs). A potential link between ALDs and circadian disruption has been observed, though how different patterns of alcohol consumption differentially impact hepatic circadian metabolism remains virtually unexplored. Using acute versus chronic ethanol feeding, we reveal differential reprogramming of…

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Arousal regulates frequency tuning in primary auditory cortex [Neuroscience]

Changes in arousal influence cortical sensory representations, but the synaptic mechanisms underlying arousal-dependent modulation of cortical processing are unclear. Here, we use 2-photon Ca2+ imaging in the auditory cortex of awake mice to show that heightened arousal, as indexed by pupil diameter, broadens frequency-tuned activity of layer 2/3 (L2/3) pyramidal…

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Extensive free-energy simulations identify water as the base in nucleotide addition by DNA polymerase [Biophysics and Computational Biology]

Transphosphorylation of nucleotide triphosphates is the central reaction in DNA replication by DNA polymerase as well as many other biological processes. Despite its importance, the microscopic chemical mechanism of transphosphorylation of nucleotide triphosphates is, in most cases, unknown. Here we use extensive simulations of DNA polymerase η to test mechanistic…

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Growth dynamics of the Arabidopsis fruit is mediated by cell expansion [Plant Biology]

Fruit have evolved a sophisticated tissue and cellular architecture to secure plant reproductive success. Postfertilization growth is perhaps the most dramatic event during fruit morphogenesis. Several studies have proposed that fertilized ovules and developing seeds initiate signaling cascades to coordinate and promote the growth of the accompanying fruit tissues. This…

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Bottleneck and selection in the germline and maternal age influence transmission of mitochondrial DNA in human pedigrees [Evolution]

Heteroplasmy—the presence of multiple mitochondrial DNA (mtDNA) haplotypes in an individual—can lead to numerous mitochondrial diseases. The presentation of such diseases depends on the frequency of the heteroplasmic variant in tissues, which, in turn, depends on the dynamics of mtDNA transmissions during germline and somatic development. Thus, understanding and predicting…

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A Physics Analysis of Tesla's Shattered Cybertruck Windows

During the big reveal of Tesla's electric pickup truck, the vehicle's windows failed an onstage smash test. Here's what might have gone wrong.

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A Whole Bunch of T-Mobile Prepaid Customers Got Hacked

As the saying goes, I am, therefore I am hacked. Or something like that.Read more…

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