Read on for the facts about Sars-CoV-2, backed up by science Coronavirus – latest updates See all our coronavirus coverage Wrong. People who never get symptoms from Covid are less infectious than people who get symptoms, but they can still have high viral loads and can pass on the virus. Continue reading…
When you're frying something in a skillet and some droplets of water fall into the pan, you may have noticed those droplets skittering around on top of the film of hot oil. Now, that seemingly trivial phenomenon has been analyzed and understood for the first time by researchers at MIT—and may have important implications for microfluidic devices, heat transfer systems, and other useful functions.
The striking thing is not the bad news, which is not really news for those who have followed the science closely. It's the report's insights on possibilities for cautious optimism The first response many of us have to a cancer diagnosis is terror, horror and the conviction that we're doomed. For those who haven't been paying serious ongoing attention to climate chaos, reminders that we are facing
As a practicing primary-care doctor, I fully empathize with parents who worry about their unvaccinated kids' potential exposure to the coronavirus. Raising my own children is a daily exercise in vulnerability. One rainy night this summer, my teenage son, a new driver who was running late for a babysitting job, asked for my keys. "Can't you walk there instead?" I pleaded. He rolled his eyes. I let
In 2016, hoping to spur advancements in facial recognition, Microsoft released the largest face database in the world. Called MS-Celeb-1M, it contained 10 million images of 100,000 celebrities' faces. "Celebrity" was loosely defined, though. Three years later, researchers Adam Harvey and Jules LaPlace scoured the data set and found many ordinary individuals, like journalists, artists, activists,
Cornel West is not particularly interested in being nice. He recently left Harvard—after his second tour as a professor there—and he made sure to post his resignation letter on Twitter : The school's "narcissistic academic professionalism," "anti-Palestinian prejudices," and what he saw as indifference toward his mother's recent death constituted "an intellectual and spiritual bankruptcy of deep
If you've been worried by recent news stories about a strain of covid called "delta plus," it may freak you out to hear that scientists just expanded the delta family from four variants to 13. Please take a deep breath. Scientists would really like you to understand that there's no evidence delta has learned any new tricks, and these new names are for helping keep track of covid's evolution—not n
Ever since humans began committing their view of the world to flat slabs of rock and papyrus, we had a sense that our mental maps are laid out in much the same way. However, our mental maps are nothing like paper maps. Humans rely on route-based maps. These internal maps, also used by animals, are composed of well-trodden routes linking frequently visited locations, with little understanding of wh
In the past decades, intensive human agricultural activities have caused a significant increase in ammonia (NH3) emissions to the atmosphere, which have led to serious environmental and public health problems.
Advancements in technology have resulted in the design of hyper–realistic, Wi-Fi–connected, programmable sex robots that can mimic human responses, but what do these developments mean for how we regulate interactions with "sexbots" in the future?
Ultracold molecules are promising for applications in new quantum technologies. Unfortunately, these molecules are destroyed upon colliding with each other. Researchers at Harvard University, MIT, Korea University and Radboud University have demonstrated that these collisional losses can be prevented by guiding the interaction between molecules using microwaves in such a way that they repel each o
On August 13, 1521, the capital city of Tenochtitlan fell after a two-month siege — a victory that marked the end of an empire. But five hundred years later, researchers are giving stories surrounding the events another look.
When our bodies are deprived of water, they take water from other organs, ultimately leading to organ failure and brain shrinkage. Dehydration is considered one of the most painful and protracted deaths a human can experience. Every year, more athletes die from overhydration than dehydration. In 1994, the Italian athlete Mauro Prosperi entered one of the most intense and grueling endurance races
Post-pandemic vacation travel was among the biggest stories of summer 2021, raising questions about air travel's contribution to greenhouse gas emissions and climate change. According to the Environmental and Energy Study Institute, 710 million tons of global carbon dioxide came from commercial aviation in 2013. By 2017, that number reached 860 million tons, a 21% increase in four years. By 2018,
Bennu, as seen by OSIRIS-REx. The asteroid known as Bennu is one of a precious few that have been explored by human spacecraft. NASA's OSIRIS-REx mission spent more than two years hanging around Bennu, and that has allowed scientists to more accurately model its orbit. The bad news is it's more likely to smack into Earth than we initially believed . The good news; it's still much more likely to m
King's research has helped uncover new evidence showing the portrayal of the execution of captives in the arena by throwing them to lions. The evidence follows the discovery of an elaborately-decorated Roman bronze key handle.
This is, in some ways, a mea culpa. For the past year or so, I've been reporting on the COVID-19 vaccines, a job that's required me to convey, again and again, how inoculations work to boost immunity and why. The shots are new, and immunology is complex . So I, like so many others in journalism and science, turned to analogies to help make the ideas of disease prevention and public health tangibl
The #MeToo movement claimed another victory Tuesday when New York Governor Andrew Cuomo announced his resignation over numerous sexual-harassment allegations. As more and more powerful harassers face consequences for their actions in the form of resignations, firings, or broader public discrediting, many seem to believe that the #MeToo movement has fully upended the status quo. But as much as the
We now have a clearer picture of the lightning-fast molecular dance occurring within the membrane that encloses each cell in our body, revealed in part by neutron beams at the National Institute of Standards and Technology (NIST). The findings may have applications in drug development, and they also address long-standing fundamental mysteries about why cell membranes move as they do.
The physicist‑turned-YA novelist talks about choosing to set The Upper World in south London, and how it was snapped up by Daniel Kaluuya for Netflix Read an extract from The Upper World below Had it not been for his secondary school caretaker, physicist-turned-novelist Femi Fadugba might never have gone on to study material sciences and quantum computing at Oxford University. "I don't usually te
New research published in Scientific Reports has revealed that a simple but robust algorithm can help engineers to improve the design of cellular materials that are used in a variety of diverse applications ranging from defense, bio-medical to smart structures and the aerospace sector.
A cancer researcher once involved in a federal research integrity probe has repeatedly been denied funding and other sources of income, according to his attorney, who blamed our coverage of the case for the scientist's continuing woes and asked us to remove a post. Our coverage of the work of Sam W. Lee goes back … Continue reading
T he throbbing near Marian Simmons's temples made her nauseous. She could barely tolerate opening her eyes; the light brought on an excruciating sensation, as if a helmet was cinched too tightly on her head. Simmons, who was 20 years old and healthy, now struggled to get out of bed in her dorm at Westminster College, a small liberal-arts school in Salt Lake City. Simmons asked a friend to drive h
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25083-8 Current designs of thermal switches are limited by a lack of continuous tunability, low switching ratio, low speed, and not being scalable. Here the authors report a continuously tunable, wide-range, fast, and cost effective thermal switching approach that is demonstrated using compressible graphene composite
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-24682-9 The only known animal polyketide-nonribosomal peptides, the nemamides, are biosynthesized by two megasynthetases in the canal-associated neurons (CANs) of C. elegans. Here, the authors map the biosynthetic roles of individual megasynthetase domains and identify additional enzymes in the CANs required for nemam
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25173-7 Treating malignant pleural mesothelioma (MpM) is challenging due to a lack of druggable genes, but other molecular features could be clinically useful. Here the authors profile mRNA translation dysregulation in MpM cell lines using polysome profiling, and identify mTORC1 and 2 as potential pharmacological targ
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25145-x Diabetes is characterized by dysfunction and loss of beta-cells, and promoting beta-cell survival is of therapeutic interest. Here the authors show that Large-tumor suppressor 2 (LATS2), a core component of the Hippo signaling pathway, induces beta-cell failure through mTORC1 hyperactivation and autophagic flu
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25100-w Advanced fabrication techniques enable a wide range of quantum devices, such as the realization of a topological qubit. Here, the authors introduce an on-chip fabrication technique based on shadow walls to implement topological qubits in an InSb nanowire without fabrication steps such as lithography and etchin
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25232-z Episodic magmatism of the early Andes is the result of a complex interplay between mantle, crust, slab and sediment contributions that can be traced using zircon chemistry. An external (tectonic) model is argued for the episodic plutonism in this extensional continental arc.
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-25124-2 Genetic association signals for fractures have been reported at the RSPO3 locus, but the causal gene and the underlying mechanism are unknown. Here, the authors show that RSPO3 exerts an important role for vertebral trabecular bone mass and bone strength in mice and fracture risk in humans.
Nature Communications, Published online: 13 August 2021; doi:10.1038/s41467-021-24928-6 In the cerebral cortex, information is processed by multiple hierarchically organized areas, reciprocally connected via feedforward and feedback circuits. Here the authors show that in primate visual cortex, feedforward projection neurons receive monosynaptic feedback contacts selectively from the area to whic
In "Believers: Making a Life at the End of the World," Lisa Wells explores the lives of "relatively ordinary people" who have chosen to live off the grid to reconnect and restore nature. Wells argues that alongside a crisis of engineering and politics, climate change has also ushered in a crisis of narrative.
"Many people had coronavirus," says asylum seeker Raudel, adding there's little social distancing or mask wearing, and sick and healthy people are mixed. ICE denies this but cases doubled since June. (Image credit: Gerald Herbert/AP)
To overlæger har taget initiativ til at oprette et nyt lægevidenskabeligt selskab for multisygdom og polyfarmaci. De håber at skabe et tværfagligt forum for sparring, udvikling og forskning, der kan komme patienterne til gode og øge den politiske bevågenhed. LVS-formand glæder sig over initiativet.
Igennem flere år har et netværk omkring multisygdom og polyfarmaci udvekslet erfaringer, men nu skal et nyt lægevidenskabeligt selskab skabe endnu bedre muligheder for at dele erfaringer og indsamle viden. Men også for at præge, hvordan sundhedsvæsenet kan omstruktureres for bedre at imødekomme patienternes behov.
Udfordringerne for den store gruppe af patienter, der har flere medicinkrævende, kroniske sygdomme, kræver også, at vi kan organisere sundhedsvæsenet anderledes, siger formanden for Lægeforeningen. Hun håber, at et nyt videnskabeligt selskab kan være med til at skubbe i den retning.
Hjärt- och kärlsjukdom är den vanligaste dödsorsaken bland kvinnor, världen över. Ändå är kvinnor ofta underrepresenterade i behandlingsstudier inom området, till exempel forskning om nya läkemedel eller ingrepp.
Microsoft co-founder Bill Gates on Thursday said his climate fund would pour $1.5 billion into projects with the United States if the government enacts a program to cut carbon emissions currently working its way through Congress.
Wildfires tearing through Montana and elsewhere in the U.S. West are devouring vast rangeland areas that cattle ranchers depend upon, setting the stage for a potential shortage of pasture as the hot, dry summer grinds on.
Den filippinska folkgruppen ayta magbukon har den högsta uppmätta andelen gener från vår utdöda släkting denisovamänniskan. Det visar en studie ledd från Uppsala universitet. Denisovamänniskan blev känd för vetenskapen 2010 genom dna-sekvensering från fingerben och tänder som hittats i Denisovagrottan i Sibirien. Trots bra genetisk information är det ännu en gåta vilka de här människorna var då e
A metal roof sits atop the burned remains of a homestead on the once-lush slopes of Hawaii's Mauna Kea—a dormant volcano and the state's tallest peak—charred cars and motorcycles strewn about as wind-whipped sand and ash blast the scorched landscape.
Doctors who claimed that COVID-19 was essentially harmless to children are now being confronted with the sad fact that it is sometimes quite dangerous to them. How they respond reveals much about them and little about the virus. The post first appeared on Science-Based Medicine .
Sommar är för många förknippat med lata dagar med flödande spontanitet. Men för familjer med barn med ätsvårigheter består "ledigheten" ofta av strategier för att få i barnet näring. Föräldrar till barn med ätsvårigheter upplever sig ofta stå ensamma, utan hjälp från vården och med omgivningens ständiga ifrågasättande. Tjugo intervjuade föräldrar vittnar om ett liv som helt styrs av barnens ätande
BioNyt Videnskabens Verden (www.bionyt.dk) er Danmarks ældste populærvidenskabelige tidsskrift for naturvidenskab. Det er det eneste blad af sin art i Danmark, som er helliget international forskning inden for livsvidenskaberne.
Bladet bringer aktuelle, spændende forskningsnyheder inden for biologi, medicin og andre naturvidenskabelige områder som f.eks. klimaændringer, nanoteknologi, partikelfysik, astronomi, seksualitet, biologiske våben, ecstasy, evolutionsbiologi, kloning, fedme, søvnforskning, muligheden for liv på mars, influenzaepidemier, livets opståen osv.
Artiklerne roses for at gøre vanskeligt stof forståeligt, uden at den videnskabelige holdbarhed tabes.