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Experts who study animal pheromones have traced the evolutionary origins of genes that allow mice, rats and other rodents to communicate through smell. The discovery is a clear example of how new genes can evolve through the random chance of molecular tinkering and may make identifying new pheromones easier in future studies. The results represent a genealogy for the exocrine-gland secreting peptide (ESP) gene family.

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Kentucky AG's office moves to delay release of grand-jury records in Breonna Taylor case

09/30/20 7:49 AM

Genetic variants that leave their carrier more susceptible to severe COVID-19 are inherited from Neanderthals, a new study finds.

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While dinosaurs ruled the land in the Mesozoic, the oceans were filled by predators such as crocodiles and giant lizards, but also entirely extinct groups such as ichthyosaurs and plesiosaurs. Now for the first time, researchers have modeled the changing ecologies of these great sea dragons.

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Decades of data allow researchers to look at predator-prey interactions in a different way: among multiple species throughout the water column. They have developed an unusually rich picture of who is eating whom off the Northeastern United States.

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Researchers produce malic acid, which contains 4 carbon atoms, through artificial photosynthesis by simply adding metal ions like aluminum and iron. This solves a problem with current artificial photosynthesis technology of only producing molecules with 1 carbon atom and paves the way to exploring the use of CO2 as a raw material.

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Scientists have measured the molecular footprint that aging leaves on various mouse and human tissues. Using the data, they have identified likely regulators of this central process.

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LIVE UPDATES: Comey testifies on FBI's actions in Russia investigation

09/30/20 7:29 AM

Earth could have lost anywhere between ten and 60 per cent of its atmosphere in the collision that is thought to have formed the Moon.

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Venus might not be a sweltering, waterless hellscape today, if Jupiter hadn't altered its orbit around the sun, according to new research.

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Two and a half years ago, MIT entered into a research agreement with startup company Commonwealth Fusion Systems to develop a next-generation fusion research experiment, called SPARC, as a precursor to a practical, emissions-free power plant.

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HIGH-STAKES SHOWDOWN

09/29/20 7:51 PM

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Biden defends son, says Hunter overcame 'drug problem' after Trump raises family controversies

09/29/20 7:35 PM

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Trump tells Biden radical left will 'have you wrapped around their finger' as clash over law and order takes center stage

09/29/20 7:11 PM

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Presidential debate gets personal as Biden calls Trump a ‘clown,’ Trump tells Biden he’s not ‘smart’

09/29/20 6:38 PM

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President Trump, Joe Biden clash over Supreme Court nomination. Join the debate now.

09/29/20 6:26 PM

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Presidential debate: Trump, Biden clash over Barrett Supreme Court nomination, ObamaCare in first showdown

09/29/20 6:16 PM

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President Trump and Joe Biden square off for historic debate in Cleveland, 9 pm ET on Fox News Channel

09/29/20 5:51 PM

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Pterosaur experts have examined the evidence that these creatures had feathers and believe they were in fact bald.

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Biden releases 2019 tax returns, calls for Trump to release his

09/29/20 10:15 AM

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Rolls-Royce concludes testing of plane technology to break electric speed record
4 by lelf | 0 comments on Hacker News.

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Tampa Bay Lighting Win Stanley Cup

09/28/20 8:02 PM

Introducing high doses of gluten from four months of age into infants' diets could prevent them from developing celiac disease, a study has found, though researchers say further studies are needed before being applied in practice.

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A study of patients hospitalized due to COVID-19 suggests that the disease might deteriorate men's testosterone levels. The study found that as men's testosterone level at baseline decreases, the probability for them to be in the intensive care unit (ICU) significantly increases.

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Travel bans will delay the peak of infection with days, while social distancing has a much stronger impact, amounting in up to 4 weeks delay, scientists report.

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Testing self-collected saliva samples could offer an easy and effective mass testing approach for detecting asymptomatic COVID-19.

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Researchers encountered a puzzle at Cape Irizar, a rocky cape located just south of the Drygalski Ice Tongue on the Scott Coast, Ross Sea. He found both ancient and what appeared to be fresh remains of Adelie penguins, mostly of chicks, which frequently die and accumulate at these colonies. However, the 'fresh' remains were puzzling, he says, because there are no records of an active penguin colony at this site.

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'Zombie fires' and burning of fire-resistant vegetation are new features driving Arctic fires -- with strong consequences for the global climate -- warn international fire scientists.

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Simultaneous heatwaves and droughts are becoming increasingly common in western parts of the Unites States, according to a new study. Periods of dry and hot weather, which can make wildfires more likely, are becoming larger, more intense, and more frequent because of climate change.

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Surviving on a warming planet can be a matter of timing -- but simply shifting lifecycle stages to match the tempo of climate change has hidden dangers for some animals, according to new research. The study has uncovered drastic consequences for birds that are breeding earlier in lockstep with earlier starts of spring: chicks hatching earlier face increased risk of poor weather conditions, food shortages and mortality.

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Navigating through life requires balancing emotion and reason, a feat accomplished by the brain region 'area 32' of the anterior cingulate cortex. The area maintains emotional equilibrium by relaying information between cognitive and emotional brain regions, according to new research.

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Experiencing multiple stressors triggered by the COVID-19 pandemic -- such as unemployment -- and COVID-19-related media consumption are directly linked to rising acute stress and depressive symptoms across the United States, according to a new study.

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Landslides have long-term effects on tundra vegetation, a new study shows. Conducting the study in North West Siberia, the researchers found that tundra vegetation regenerated rapidly after a major landslide event in 1989.

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Researchers have shown that over the past two thousand years, volcanoes have played a larger role in natural temperature variability than previously thought, and their climatic effects may have contributed to past societal and economic change.

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Worldwide coronavirus death toll passes 1 million

09/28/20 5:44 PM

Early results of an experimental vaping study have shown significant lung injury from e-cigarette devices with nickel-chromium alloy heating elements.

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Long after a COVID-19 vaccination is developed and years after the coronavirus death toll is tallied, the impact on mental health will linger, continuing to inflict damage if not addressed, according to new research.

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A type of anti-bacterial T cells, so-called MAIT cells, are strongly activated in people with moderate to severe COVID-19 disease, according to a new study.

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Several states are reporting 911 dispatch outages.

09/28/20 5:27 PM

New research has revealed how robust initial states can be prepared in quantum information systems, minimizing any unwanted transitions which lead to losses in quantum information.

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Researchers have developed an eco-friendly zero-cement concrete, which all but eliminates corrosion.

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New findings about body fat help explain the differing health risks men and women face - and set the stage for better, more targeted treatments.

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Two groups of tiny, delicate marine organisms, sea butterflies and sea angels, were found to be surprisingly resilient -- having survived dramatic global climate change and Earth's most recent mass extinction event 66 million years ago.

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A new study has identified four new species of parasitic, cockroach-killing ensign wasps that became encased in tree resin 25 million years ago and were preserved as the resin fossilized into amber.

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Quasiparticles die young, lasting far, far less than a second. Why? A new Monash University study finds a culprit beyond the usual suspect (decay into lower energy states). Identification of the new villain--many-body dephasing--may be key to controlling quantum effects such as superconductivity and superfluidity.

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Researchers have made new discoveries on the effects of temperature on sustainable polymers. Their findings may help the industry to produce plastics that are better for the environment.

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Nearly 30 years after recording a temperature of minus 93.2 degrees Fahrenheit (minus 69.6 Celsius) in Greenland, the measurement has been verified by the World Meteorological Organization as the coldest recorded temperature in the Northern Hemisphere.

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Researchers demonstrated a proof-of-concept stem cell treatment in a mouse model of Parkinson's disease. They found that neurons derived from stem cells can integrate well into the correct regions of the brain, connect with native neurons and restore motor functions.

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An analysis conducted in 45,000 adults mainly of European ancestry associated 160 genes with brain shrinkage seen on MRI.

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Gravitational wave detectors opened a new window to the universe by measuring the ripples in spacetime produced by colliding black holes and neutron stars, but they are ultimately limited by quantum fluctuations induced by light reflecting off of mirrors. Researchers have conducted a new experiment to explore a way to cancel this quantum backaction and improve detector sensitivity.

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The Hyperspectral Stripe Projector captures spectroscopic and 3D imaging data for applications like machine vision, crop monitoring, self-driving cars and corrosion detection.

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Synthetic dyes are commonly used to assess the toxicity of chemical compounds in cell cultures. However, these dyes damage cells, rendering the cultures useless for long-term experiments. Recently, scientists discovered that a natural food pigment can replace synthetic dyes in cell viability assays for three widely varied types of cells -- and performs better. Their approach is also environment-friendly and inexpensive, and opens up possibilities in a range of fields including drug discovery.

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Biologists compared museum collections of cichlid fishes collected before a dam was closed in 1984 on the Tocantins River in the Amazon and contemporary specimens taken from the Tucuruí Reservoir by fishermen 34 years later.

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Scientists have developed a new tool that adapts machine learning algorithms to the needs of synthetic biology to guide development systematically. The innovation means scientists will not have to spend years developing a meticulous understanding of each part of a cell and what it does in order to manipulate it.

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In the coming years and decades, various nations want to explore the moon, and plan to send astronauts there again for this purpose. But on our inhospitable satellite, space radiation poses a significant risk. Scientists report for the first time on time-resolved measurements of the radiation on the moon. The measurements show an equivalent dose rate of about 60 microsieverts per hour. In comparison, on a long-haul flight from Frankfurt to New York, it is about 5 to 10 times lower, and on the ground well over 200 times lower.

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Scientists used computer simulations to better understand the mechanical transition in glassy materials. They found that a system-wide network provides the backbone that gives glass its strength. This work may lead to advances in the production of stronger glass for smartphones and other applications.

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A new study finds any alcohol use during pregnancy, even low levels, is associated with subtle, yet significant behavioural and psychological effects in children including anxiety, depression and poor attention.

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A new study shows extraneous images draw attention from text, reducing comprehension in beginning readers.

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CHEOPS keeps its promise: Observations with the space telescope reveal details of the exoplanet WASP-189b - one of the most extreme planets known.

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EXCLUSIVE: Inside the White House's plan to deploy 'knife fighters' to defend Amy Coney Barrett

09/28/20 3:32 AM

A new article examines the ways in which COVID-19 disproportionately impacts historically disadvantaged communities of color in the United States, and how baseline inequalities in our health system are amplified by the pandemic. The authors also discuss potential solutions.

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Researchers have shaken up a once accepted timeline for cataclysmic events in the early solar system. Geological and geochemical records indicate that the Earth-Moon system experienced a period of frequent and cataclysmic impacts from asteroids and other bodies. It was thought that this period had a relatively sudden onset, but the researchers have found evidence that this bombardment period may have started much earlier, and decreased in intensity over time.

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The largest-ever study of tree rings from Norilsk in the Russian Arctic has shown that the direct and indirect effects of industrial pollution in the region and beyond are far worse than previously thought.

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While the Y chromosome's role was believed to be limited to the functions of the sexual organs, a scientist has shown that it impacts the functions of other organs as well.

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By developing better computer simulations, researchers have determined that the scattering of stars from their orbits by the gravity of massive clumps within galaxies leads to a common look in galaxy disks -- bright centers fading away to dark edges.

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Astronomers spotted a pair of massive baby stars growing in salty cosmic soup. Each star is shrouded by a gaseous disk which includes molecules of sodium chloride, commonly known as table salt, and heated water vapor. Analyzing the radio emissions from the salt and water, the team found that the disks are counter rotating. It is promising that salt is an excellent marker to explore the immediate surroundings of giant baby stars.

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Thunderstorms often provoke violent cloud bursts that can result in devastating flooding. But what actually spawns thunderstorms and cloud bursts? This question has spurred a new study.

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Biden calls on Senate to hold off confirming Amy Coney Barrett, Trump says there is 'tremendous amount of time' ahead of electio

09/27/20 9:39 AM

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Typically, computer models of climate become more and more complex as researchers strive to capture more details of our Earth's system, but according to a team of researchers, to assess risks, less complex models, with their ability to better sample uncertainties, may be a better choice.

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WATCH NOW: 'Fox & Friends' co-host Pete Hegseth's exclusive interview with Trump on nomination of Amy Coney Barrett

09/27/20 3:08 AM

Sharing a home with a pet appeared to act as a buffer against psychological stress during lockdown, a new survey shows.

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Researchers suggest that carriers of the genetic mutations PiZ and PiS are at high risk for severe illness and even death from COVID-19. These mutations lead to deficiency in the alpha1-antitrypsin protein, which protects lung tissues from damage in case of severe infections. Other studies have already associated deficiency in this protein with inflammatory damage to lung function in other diseases.

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The life-support option known as ECMO appears to be saving lives for many of the critically ill COVID-19 patients who receive it. Patients in a new international study faced a staggeringly high risk of death, as ventilators and other care failed to support their lungs. But after they were placed on ECMO, their actual death rate was less than 40 percent.

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Researchers found that gently heating N95 masks in high relative humidity could inactivate SARS-CoV-2 virus trapped within the masks, without degrading the masks' performance.

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President Trump officially nominates Judge Amy Coney Barrett

09/26/20 2:06 PM

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President Trump announces nomination to Supreme Court, live on Fox News Channel

09/26/20 2:04 PM

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Rochester mayor appoints first female interim police chief, part of overhaul following protests and violence

09/26/20 8:37 AM

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While declines in U.S. hospital admissions during the onset of COVID-19 has been well-documented, little is known about how admissions during the rebound varied by age, insurance coverage and socioeconomic groups. The decline in non-COVID-19 admissions was similar across all demographic subgroups but the partial rebound that followed shows that non-COVID-19 admissions for residents from Hispanic neighborhoods was significantly lower than for other groups.

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People of Asian ancestry face yet another set of challenges posed by racism and xenophobia which has soared during the COVID-19 pandemic.

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The anxiety, stress and worry brought on by COVID-19 is not limited to daytime hours. The pandemic is affecting our dreams as well, infusing more anxiety and negative emotions into dreams and spurring dreams about the virus itself, particularly among women, according to new research.

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A research team has systematically investigated the cognitive abilities of lemurs, which have relatively small brains compared to other primates. Conducting systematic tests with identical methods revealed that cognitive abilities of lemurs hardly differ from those of monkeys and great apes. Instead, this study revealed that the relationship between brain size and cognitive abilities cannot be generalized and it provides new insights into the evolution of primates.

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Heatwaves in the world's oceans have become over 20 times more frequent due to human influence. This is what researchers are now able to demonstrate. Marine heatwaves destroy ecosystems and damage fisheries.

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Researchers create a quantum algorithm that removes spin contaminants while making chemical calculations on quantum computers. This allows for predictions of electronic and molecular behavior with degrees of precision not achievable with classical computers and paves the way for practical quantum computers to become a reality.

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Researchers have found that marine bacteria exploit resource patches efficiently by switching between attached and planktonic lifestyles, and fine-tuning the time spent on patches depending on their quality. Bacteria stayed longer on higher-quality patches, as predicted by patch use theory. Future studies in this area could help to predict the role of marine bacteria in the global carbon cycle.

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The severe droughts in the USA and Australia are the first sign that the tropics, and their warm temperatures, are apparently expanding in the wake of climate change.

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In China, approximately 10 billion online food orders were served to over 400 million customers in 2018. All of these orders came in single-use plastic packaging, with single-use plastic tableware. Environmental scientists found that reusable tableware can substantially reduce packaging waste and life cycle environmental emissions.

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Tectonic processes are thought to have triggered past ice ages, but how? A new analysis of mountain building in the maritime tropics of Southeast Asia attributes the last ice age, which reached a maximum 15,000 years ago, to increasing rock weathering in the rising island arc from Sumatra to New Guinea over the past 15 million years, with the first ice sheets in the Northern Hemisphere appearing about 3 million years ago.

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A new study suggests that star-shaped brain cells known as astrocytes could be as important to the regulation of sleep as neurons. The study builds new momentum toward ultimately solving the mystery of why we sleep and how sleep works in the brain. The discovery may also set the stage for potential future treatment strategies for sleep disorders and neurological diseases and other conditions associated with troubled sleep.

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Carbon-based computers have the potential to be a lot faster and much more energy efficient than silicon-based computers, but 2D graphene and carbon nanotubes have proved challenging to turn into the elements needed to construct transistor circuits. Graphene nanoribbons can overcome these limitations, but to date scientists have been made only semiconductors and insulators, not the metallic wires to connect them. UC Berkeley scientists have now achieved the goal of a metallic graphene nanoribbon.

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Trump $500B plan to aid Black communities designates KKK, Antifa as 'terrorist organizations'

09/25/20 9:57 AM

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Florida Gov. DeSantis lifts major COVID-era restrictions on restaurants, other businesses

09/25/20 9:35 AM

Researchers have sequenced the genome of Alexander Fleming's penicillin mould for the first time and compared it to later versions.

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Mitochondria are the powerhouses of our cells, generating energy that supports life. A giant molecular proton pump, called complex I, is crucial: It sets in motion a chain of reactions, creating a proton gradient that powers the generation of ATP, the cell's fuel. Scientists have solved the mystery of how complex I works: Conformational changes in the protein combined with electrostatic waves move protons into the mitochondrial matrix.

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A world-first study has found that severely overweight people are less likely to be able to re-wire their brains and find new neural pathways, a discovery that has significant implications for people recovering from a stroke or brain injury.

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Breonna Taylor's family demands Kentucky AG release grand jury transcripts, lawyer says

09/25/20 8:08 AM

People expect technology to suck because it sucks
95 by ivanche | 67 comments on Hacker News.

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LIVE UPDATES: Late Justice Ruth Bader Ginsburg's casket arrives at US Capitol

09/25/20 6:35 AM

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FBI official on Mueller team said Flynn prosecution had 'get Trump' attitude

09/25/20 4:34 AM

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Night 2: Confrontations escalate in Louisville as curfew inches closer, follow live updates

09/24/20 7:09 PM

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DOJ sends stern warning to PA county after multiple military ballots found trashed

09/24/20 5:56 PM

A new observational study finds patients in the hospital for COVID-19 have high levels of soluble urokinase receptor (suPAR), an immune-derived pathogenic protein that is strongly predictive of kidney injury.

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Physicists have published a review that explores Bell's inequalities and his concepts of reality and explains their relevance to quantum information and its applications.

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Researchers have identified a new type of 'landfalling drought' that originates over the ocean before traveling onto land, and which can cause larger, drier conditions than other droughts.

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Patriots' Robert Kraft cleared of charge in massage parlor sex case

09/24/20 10:14 AM

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The first stages of placental development take place days before the embryo starts to form in human pregnancies. The finding highlights the importance of healthy placental development in pregnancy, and could lead to future improvements in fertility treatments such as IVF, and a better understanding of placental-related diseases in pregnancy.

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Researchers have discovered significant variations in the ability of different UK butterfly species to maintain a suitable body temperature. Species that rely most on finding a suitably shady location to keep cool are at the greatest risk of population decline. The results predict how climate change might impact butterfly communities, and will inform conservation strategies to protect them.

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A graduate student relied on the bus system to get to class. He wanted to understand why, despite arriving at the bus stop on time, he was sometimes late to class. He developed a tool that considers transportation variables weighed against how great a margin of error bus riders are willing to accept, which can also apply to getting a lunar rover to its destination, and with a high degree of reliability.

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Amazonia is closer to a catastrophic ecological tipping point than any time in the last 100,000 years, and human activity is the cause.

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In a new climate modeling study that looked at the impacts of accelerated ice melt from the Antarctic Ice Sheet (AIS) on future climate, a team of climate scientists reports that future ice-sheet melt is expected to have significant effects on global climate.

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In a new study of volcanic processes, scientists have demonstrated the role nanolites play in the creation of violent eruptions at otherwise 'calm' and predictable volcanoes. The study describes how nano-sized crystals (nanolites), 10,000 times smaller than the width of a human hair, can have a significant impact of the viscosity of erupting magma, resulting in previously unexplained and explosive eruptions.

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DOJ: Hundreds charged with crimes 'under the guise' of peaceful demonstrations since late-May

09/24/20 8:17 AM

Scientists have described a new nanodevice that acts almost identically to a brain cell. Furthermore, they have shown that these synthetic brain cells can be joined together to form intricate networks that can then solve problems in a brain-like manner.

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Current global pledges to tackle climate change are the equivalent of declaring a pandemic without a plan for social distancing, researchers say.

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Researchers have discovered a novel, second mechanism of action by the antiviral drug remdesivir against SARS-CoV-2. The research team previously demonstrated how remdesivir inhibits the COVID-19 virus's polymerase or replication machinery in a test tube.

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Genome duplications play a major role in the development of forms and structures of plant organisms and their changes across long periods of evolution. Biologists made this discovery in their research of the Brassicaceae family. To determine the scope of the different variations over 30 million years, they analyzed all 4,000 species of this plant family and investigated at the genus level their morphological diversity with respect to all their characteristic traits.

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Researchers have predicted how and where the Asian giant hornet, an invasive newcomer to the Pacific Northwest, popularly dubbed the 'murder hornet,' could spread and find ideal habitat, both in the United States and globally.

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Breonna Taylor protests: Suspect accused of shooting cops ID'd as Louisville sees nearly 100 arrests

09/24/20 6:26 AM

By BY ERIN GRIFFITH from NYT Technology https://ift.tt/3j2P0PU
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