20% spild af mad
Fifth of world's food lost to over-eating and waste, study finds Almost 20 per cent of the food made available to consumers is lost through over-eating or waste, a study suggests.
Læge-netværk hjælper patienter med at dø Et nyt netværk af læger yder aktiv dødshjælp til syge patienter. Det er dybt problematisk, at en gruppe læger udfører et arbejde, der er i strid med loven, mener Lægeforeningen.
Scientists find genetic mutations that drive antibiotic resistance Scientists from the Broad Institute of MIT and Harvard in Cambridge, Massachusetts, have identified novel mutations in bacteria that promote the evolution of high-level antibiotic resistance.
antimikrobelle stoffer i varan
Antimicrobial substances identified in Komodo dragon blood In a land where survival is precarious, Komodo dragons thrive despite being exposed to scads of bacteria that would kill less hardy creatures. Now in a study, scientists report that they have detected antimicrobial protein fragments in the lizard's blood that appear to help them resist deadly infections. The discovery could lead to the development of new drugs capable of combating bacteria that ha
antimikrobelle stoffer i varan
Antimicrobial substances identified in Komodo dragon blood In a land where survival is precarious, Komodo dragons thrive despite being exposed to scads of bacteria that would kill less hardy creatures. Now in a study published in the Journal of Proteome Research, scientists report that they have detected antimicrobial protein fragments in the lizard's blood that appear to help them resist deadly infections. The discovery could lead to the development of n
astmamedicin mod lungeinfektion
Asthma drugs could prevent prevent deadly form of pneumonia, research suggests Two drugs used to treat asthma and allergies may offer a way to prevent a form of pneumonia that can kill up to 40 percent of people who contract it, researchers at the University of Virginia School of Medicine have found.
Atmosfæriske floder giver anledning til store stormskader Vandtransport i smalle korridorer i atmosfæren er et vejrfænomen, der får voksende opmærksomhed. Det medfører både oversvømmelser og ekstreme vindhastigheder.
Drugs that alter inhibitory targets offer therapeutic strategies for Autism, Schizophrenia Memories are formed at structures in the brain known as dendritic spines, which communicate with other brain cells through 'synapses.' Researchers recently discovered that an inhibitory brain receptor triggers synaptic pruning in adolescence. Now, a new article shows that drugs that selectively target these receptors, when administered during adolescence, can alter synapse number, with possible im
Aztek døde af salmonella måske
Two studies offer evidence suggesting salmonella may have killed off the Aztecs (Phys.org)—Two separate studies conducted by two teams of researchers has led to evidence suggesting that salmonella infections may have been one of the factors that led to the deaths of the vast majority of the Aztecs living in Mexico after the arrival of the Spaniards. Both studies were conducted by teams with members from around the globe and both resulted in papers that have been uploaded to t
Bakterier i 50k krystaller
50,000 Year Old Microbes Have Just Been Found In Crystals. Alive. NASA finds 50,000 year-old bacteria alive inside gigantic crystals in a Mexican mine.
Ny chip skal gøre det af med standbyforbrug En ny chip skal få batterier i sensorer til at holde op til 10.000 gange længere og eliminere standbyforbrug i elektriske apparater.
brystkræft efter kemoterapi
Scientists identify chain reaction that shields breast cancer stem cells from chemotherapy Working with human breast cancer cells and mice, researchers say they have identified a biochemical pathway that triggers the regrowth of breast cancer stem cells after chemotherapy.
brystkræft og gener
Breast cancer genes could predict best treatment Effective breast cancer treatment options are predictable based on the way certain genes act or express themselves, new research shows. The findings, published in the journal Oncogene , offer proof that gene expression patterns can help direct the type of therapy a patient receives, paving the way for more targeted and personalized approaches to care. “Breast cancer has numerous subtypes,” says E
brystkræft og gener
The way breast cancer genes act could predict your treatment Effective treatment options for breast cancer can be predicted based on the way certain breast cancer genes act or express themselves, a researcher has concluded.
bør læger ikke have skæg?
Should Doctors Have Beards? The hygiene of facial hair in health care is a controversy that dates back at least to the 1800s —
Chimpanse med Down syndrom
Second case of 'Down syndrome' in chimps Japanese researchers have confirmed the second case known to science of a chimpanzee born with trisomy 22, a chromosomal defect similar to that of Down syndrome (or trisomy 21) in humans.
Chimpanse med Down syndrom
Researchers document second case of 'Down syndrome' in chimps Japanese researchers have confirmed the second case known to science of a chimpanzee born with trisomy 22, a chromosomal defect similar to that of Down syndrome (or trisomy 21) in humans. The report on Kanako, a 24-year-old female chimp born into captivity, was led by Satoshi Hirata of Kyoto University in Japan, and appears in the journal Primates, published by Springer. The authors also describe
CAR T cells more powerful when built with CRISPR, researchers find Researchers have harnessed the power of CRISPR/Cas9 to create more-potent chimeric antigen receptor (CAR) T cells that enhance tumor rejection in mice.
Will phages complicate quest for designer gut bacteria? Researchers planning to use the CRISPR genome-editing system to produce designer gut bacteria may need to account for the dynamic evolution of the microbial immune system. CRISPR is an acquired immune system that allows bacteria and other single-celled organisms to store snippets of DNA to protect themselves from viruses called phages. The system allows a cell to “remember” and mount a defense ag
The Long-Shot Bid to Put Crispr in the Hands of the People Legal experts are filing a petition. They want the federal government to step in and bring Crispr back to the people.
Microbe, virus co-evolution: Model of CRISPR, phage co-evolution explains confusing experimental results A new study suggests that researchers planning to use the CRISPR genome-editing system to produce designer gut bacteria may need to account for the dynamic evolution of the microbial immune system.
Scientists present the smallest member of the CRISPR-Cas9 family developed to date Scientists at the Center for Genome Engineering, within the Institute for Basic Science (IBS), in collaboration with KIM Eunji (ToolGen Inc.) and KIM Jeong Hun (Seoul National University) have engineered the smallest CRISPR-Cas9 to date, delivered it to the muscle cells and in the eyes of mice via adeno-associated viruses (AAV) and used it to modify a gene causing blindness. Published on Nature Co
Dolly klonet får
8 Mammals That Have Been Cloned Since Dolly the Sheep It was 20 years ago this week that scientists announced the first successful cloning of a mammal — the now-famous sheep Dolly.
Dolly klonet får
20 Years After Dolly the Sheep, What Have We Learned About Cloning? Today marks the 20th anniversary of the announcement of Dolly the sheep, the first mammal cloned from an adult cell.
An epigenetics gold rush: new controls for gene expression How rediscovered chemical tags on DNA and RNA are shaking up the field.
Significant epilepsy gene discovery in dogs Research groups have described in collaboration a novel myoclonic epilepsy in dogs and identified its genetic cause. The study reveals a novel candidate gene for human myoclonic epilepsies, one of the most common forms of epilepsy. As a result, a genetic test was developed for veterinary diagnostics and breeding programs.
fedt og muskelstamceller
Obesity reprograms muscle stem cells Obesity is associated with reduced muscle mass and impaired metabolism. Epigenetic changes that affect the formation of new muscle cells may be a contributing factor, according to new research.
fluorescens viser kviksølvforurening i fisk
Fluorescence method detects mercury contamination in fish Researchers have developed a fluorescent polymer that lights up in contact with mercury that may be present in fish. High levels of the metal were detected in samples of swordfish and tuna. According to the conclusions of another study, mercury exposure is linked to reduced fetal and placental growth in pregnant women.
How the brain remembers fearful experiences Scientists reveal for the first time the specific patterns of electrical activity in rat brains that are associated with specific memories, in this case a fearful experience.
Should we mine the deep ocean? Environment Behind the deep sea “gold rush” for increasingly rare minerals Is the deep sea the next frontier for mining or a search for fool’s gold?
herpes og autisme
What pregnant women actually need to know about herpes Health A reported link between herpes and autism isn't as scary as it sounds A new study reports a link between herpes and autism. But there's more to it than that. And having a baby isn't as scary as many HSV-positive women are led to believe.
herpes og autisme
Autism risk linked to herpes infection during pregnancy Women actively infected with genital herpes during early pregnancy had twice the odds of giving birth to a child later diagnosed with autism spectrum disorder (ASD), according to a study.
HIV vaccine therapy lets five people control virus without drugs The therapy gives the immune system the tools to flush out HIV, meaning daily drugs can be ditched – one man has been free of them for seven months
hjernekirurgi af hjernekræft ved brug af supervæske til ultralyd
Superfluid is now helping brain surgeons A superfluid, which resembles brain tissue, makes ultrasound images easier to interpret during an operation. This will make it easier for surgeons to remove brain tumors more accurately, say researchers.
Researchers uncover brain circuitry central to reward-seeking behavior Scientists have found that as mice learn to associate a particular sound with a rewarding sugary drink, one set of prefrontal neurons becomes more active and promotes reward-seeking behavior while other prefrontal neurons are silenced, and those neurons act like a brake on reward-seeking.
hvorfor er billers skelet så let
Scientists decipher the nanoscale architecture of a beetle's shell Beetles wear a body armor that should weigh them down—think medieval knights and turtles. In fact, those hard shells protecting delicate wings are surprisingly light, allowing even flight.
hvorfor er billers skelet så let
Scientists decipher the nanoscale architecture of a beetle's shell A professor of mechanical and materials engineering has found a way to analyze the fibrous nanostructure of a beetle's lightweight but durable shell.
Proteins in your runny nose could reveal a viral infection It may seem obvious, but the key to confirming whether someone is suffering from a cold or flu virus might lie at the misery's source — the inflamed passages of the nose and throat. Scientists have identified a group of proteins that, when detected in specific quantities in the mucous, are 86 percent accurate in confirming the infection is from a cold or flu virus, according to a small, proof-of-
Russia military acknowledges new branch: info warfare troops Along with a steady flow of new missiles, planes and tanks, Russia's defense minister said Wednesday his nation also has built up its muscle by forming a new branch of the military—information warfare troops.
Nearby Star Hosts 7 Earth-Size Planets [Video] Astronomers say at least three of the worlds may be habitable, and could be studied for signs of life within a decade —
katteparasit og psykosesmitte
Despite 'Mind-Controlling' Parasite, Cat Owners Not at Risk for Psychosis Cats are known to carry a parasite linked to symptoms of psychosis in humans, but despite this, a new study finds no connection between cat ownership and symptoms of psychosis.
katteparasit og psykosesmitte
Cat ownership not linked to mental health problems New research has found no link between cat ownership and psychotic symptoms, casting doubt on previous suggestions that people who grew up with cats are at higher risk of mental illness.
katteparasit og psykosesmitte
Cat poop parasites don't actually make you psychotic Animals Correlation and causation get mixed up again Cat owners can sleep easy tonight. Well, maybe they can’t if their cat likes to wake them up at 4am by gently clawing their cheeks, but they can at least put their minds…
kemoterapi-bivirkninger og muskelmasse
Measuring patients' muscles to predict chemotherapy side effects Measuring patients' muscle mass and quality could potentially help doctors better identify patients at high risk for toxic side effects that could require hospitalizations, researchers report.
Creative people have better-connected brains Seemingly countless self-help books and seminars tell you to tap into the right side of your brain to stimulate creativity. But forget the "right-brain" myth — a new study suggests it's how well the two brain hemispheres communicate that sets highly creative people apart.
kunstig nedfrysning af Arktis
Tiny, Wind-Powered Pumps Could Help Replenish Arctic Ice Tens of thousands of wind-powered pumps could freeze more sea ice during the Arctic winter, thereby preserving more summer sea ice, researchers propose.
Brain-machine interfaces: Bidirectional communication at last A prosthetic limb controlled by brain activity can partially recover the lost motor function. Neuroscientists asked whether it was possible to transmit the missing sensation back to the brain by stimulating neural activity in the cortex. They discovered that not only was it possible to create an artificial sensation of neuroprosthetic movements, but that the underlying learning process occurs very
Den vertikale farm: Landbrug uden jord og naturligt sollys Dyrkning uden jord og naturligt lys har stort potentiale til at forsyne verdens storbyer med lokalt producerede fødevarer. En mulighed virksomheden Aerofarms har fået øjnene op for med deres vertikale farm i New Jersey, som er verdens hidtil største af sin slags.
metan fra CO2
Scientists discover how essential methane catalyst is made New ways to convert carbon dioxide (CO2) into methane gas for energy use are a step closer after scientists discovered how bacteria make a component that facilitates the process. Recycling CO2 into energy has immense potential for making these emissions useful rather than a major factor in global warming. However, because the bacteria that can convert CO2 into methane, methanogens, are notoriously
metan fra CO2
Scientists discover how essential methane catalyst is made New ways to convert carbon dioxide (CO2) into methane gas for energy use are a step closer after scientists discovered how bacteria make a component that facilitates the process.
Scientists create a nano-trampoline to probe quantum behavior For the first time, scientists have measured quantum criticality by developing a thin membrane suspended in air by very narrow bridges, thereby forming a 'nano-trampoline'. This enabled specific heat measurements of thin films through a quantum phase transition from a superconducting state to an electrically insulating state close to absolute zero temperature, and is expected to be a milestone in
ny måde at teste farmaceutiske stoffer
Study says drugs could be developed cheaper and faster Chemists at the University of Waterloo, SCIEX and Pfizer have discovered a new way to help the pharmaceutical industry identify and test new drugs, which could revolutionize drug development, and substantially reduce the cost and time drugs need to reach their market.
oxytoxin og fædre pleje
Oxytocin may drive dads to nurture their toddlers Fathers given boosts of the hormone oxytocin show increased activity in brain regions associated with reward and empathy when viewing photos of their toddlers, new research shows. “Our findings add to the evidence that fathers, and not just mothers, undergo hormonal changes that are likely to facilitate increased empathy and motivation to care for their children,” says lead author James Rilling,
New approach for the capture of tumor-derived exosomes from a prostate cancer cell line In a new paper in Springer's Journal of Materials Science, researchers at Washington State University report a new approach for the effective capture of tumor-derived exosomes from a prostate cancer cell line. Exosomes are small secreted vesicles that play a key role in intercellular communication and cancer progression.
Buttercups focus light to heat their flowers and attract insects A special layer of cells inside the petals makes them act together like a parabolic reflector, focusing visible and infrared light on the flower centre
Sophisticated optical secrets revealed in glossy buttercup flowers Buttercup flowers are known for their intense, shiny yellow colour. For over a century, biologists have sought to understand why the buttercup stands out. University of Groningen scientists have now brought together all that was known about the buttercup and added some new information too. The results will be published by the Journal of the Royal Society Interface on 22 February 2017.
resveratrol mod lungesygdom
Resveratrol may be an effective intervention for lung aging Researchers demonstrate, for the first time that inhaled resveratrol treatments slow aging-related degenerative changes in mouse lung. Lung aging, characterized by airspace enlargement and decreasing lung function, is a significant risk factor for chronic human lung diseases.
sandheder og løgne
Learn to spot ‘alternative facts’ in science The Volkswagen emissions scandal and past promotions of tobacco are two examples of “alternative facts” in science’s past, a researcher warns. “In everyday life, we recognize that we should think twice about trusting someone’s decision if they have a significant vested interest that could skew their judgment,” says Kevin Elliott, an associate professor at Michigan State University who specializes
signal fra hjernen
Tiny fibers open new windows into the brain For the first time, a single multifunction flexible fiber no bigger than a human hair, has successfully delivered a combination of optical, electrical and chemical signals back and forth into the brain.
Itch neurons play a role in managing pain There are neurons in your skin that are wired to sense itchy things. These neurons are separate from the ones that detect pain, and yet, chemical-induced itch is often accompanied by mild pain such as burning and stinging sensations. But when it comes to sending signals toward your brain through your spinal cord, itch and mild pain can go through the same set of spinal cord neurons.
smugling af fisk
Hidden no more: First-ever global view of transshipment in commercial fishing industry Transshipment, the transfer of goods from one boat to another, is a major pathway for illegally caught and unreported fish to enter the global seafood market. It has also been associated with drug smuggling and slave labor. Illegal in many cases, transshipment has been largely invisible and nearly impossible to manage, because it often occurs far from shore and out of sight. Until now.
stamceller og lægevidenskab
Researchers take broad look at stem cells Scientists have focused recent work on the study of and utility of adult-derived stem cells. The team put together the review after recognizing that the medical and general communities have limited knowledge about the various types of stem cells and how they could be used in medicine.
Stevia og diabetes
Dansk forsker udvikler diabetesmedicin af stevia Lektor på Aarhus Universitet har arbejdet med stevia i 25 år og er klar med kliniske studier af sin diabetesmedicin.
Testosterone treatment improves bone density and anemia, may lead to cardiac risk Testosterone treatment improved bone density and anemia for men over 65 with unequivocally low testosterone, a new study has concluded. However, testosterone treatment did not improve cognitive function, and it increased the amount of plaque buildup in participants' coronary arteries.
Trump og science klima
How 'Guerrilla Archivists' Have Rescued Data Throughout History Activists today are racing to save climate records from the Trump administration. Secret archives were a powerful way to fight hostile political climates throughout history – from the Nazis to the Islamic State.
VIDEO: Frivillige samler DNA-prøver fra dræbte dyr Ulveentusiaster undersøger en død kronhjortekalv, der er dræbt af bid fra noget, der formodentlig er en ulv.
Sporhunden Novo er specialist i at opsnuse ulve Hyrdehunden Novo er en af syv hunde i verden, der er specialtrænede i at opspore rovdyr som ulve. Han har bl.a. været med til at snuse sig ind på ulvene i Vestjylland.
VIDEO: Ulvepar lever efter alt at dømme i Vestjylland En lang række indicier peger på, at et ulvepar trives i det vestlige Jylland – og måske er flyttet permanent hertil. Dyrene er blevet spottet af flere kamerafælder. Ulveunger kan være på vej.
DNA bekræfter ulveangreb i Vestjylland Angreb på får har i lang tid plaget husdyrejere omkring Holstebro. DNA-prøver viser nu, at en ulv i mindst ét tilfælde er skyldig.
Zika may cause miscarriages, thin brain tissue in babies carried to term In early pregnancy in mice with complete immune systems, Zika virus can cross the placenta — intended to protect the developing fetus — and appears to lead to a high percentage of miscarriages and to babies born with thin brain tissue and inflammation in brain cells, report scientists.
ørkenfolk der tåler arsen
Unravelling the atomic and nuclear structure of the heaviest elements Little is known about the heaviest, radioactive elements in Mendeleev's table. But an extremely sensitive technique involving laser light and gas jets makes it possible for the very first time to gain insight into their atomic and nuclear structure.