ScienceDaily: Top News |
- Sugar-sweetened drinks linked to increased risk of colorectal cancer in women under 50, study finds
- PCB contamination in Icelandic orcas: a matter of diet
- Swiping, swabbing elevates processing plant food safety
- Scrap for cash before coins
- Online learning doesn't improve student sleep habits, research suggests
- Organ transplant recipients remain vulnerable to COVID-19 even after second vaccine dose
- 'Molecular glue' makes perovskite solar cells dramatically more reliable over time
- Temperature explains why aquatic life is more diverse near equator
- Evading the uncertainty principle in quantum physics
- Most human origins stories are not compatible with known fossils
- COVID-19 vaccine delivery by age may mitigate deaths and severe health impacts
- The cerebellum may have played an important role in the evolution of the human brain
- Sharks use Earth's magnetic fields to guide them like a map
- Artificial color-changing material that mimics chameleon skin can detect seafood freshness
- Healthy young adults who had COVID-19 may have long-term impact on blood vessels and heart health
- Physicists describe new type of aurora
- Physicists find a novel way to switch antiferromagnetism on and off
- Blocking viruses' exit strategy
- Shining new light on stepparent fairy-tale stereotype
- COVID-19 vaccine is associated with fewer asymptomatic SARS-CoV-2 infections, study finds
- New study tracked large sharks during hurricanes
- First nanoscale look at a reaction that limits the efficiency of generating hydrogen fuel
- Many consumers misinterpret food date labels, yet use them with confidence
- First member of ill-fated 1845 Franklin expedition is identified by DNA analysis
- Pioneering study explores passengers' experiences of self-driving cars in winter conditions
- Alzheimer's study: A Mediterranean diet might protect against memory loss and dementia
- Secret behind maintaining a healthy weight loss
- One third of patients hospitalized with COVID-19 have lung changes after a year
- Just a few atoms thick: New functional materials developed
- Youngest children in class more likely to be diagnosed with learning disability
- Earliest evidence of humans changing ecosystems with fire
- New ant species named in recognition of gender diversity
- A high-tech textile to stay comfortable outdoors
- An uncrackable combination of invisible ink and artificial intelligence
- Meet the freaky fanged frog from the Philippines
- A new window to see hidden side of magnetized universe
- How mitochondria make the cut
- Bees thrive where it's hot and dry: A unique biodiversity hotspot located in North America
- Release of drugs from a supramolecular cage
- Microneedles are promising devices for painless drug delivery with minimal side effects
- 3D bioprinting technique controls cell orientation
| Sugar-sweetened drinks linked to increased risk of colorectal cancer in women under 50, study finds Posted: 06 May 2021 03:33 PM PDT Colorectal cancer diagnoses have increased among people under age 50 in recent years and researchers are seeking reasons why. A new study has found a link between drinking sugar-sweetened beverages and an increased risk of developing colorectal cancer in women under age 50. The findings suggest that heavy consumption of sugary drinks during adolescence (ages 13 to 18) and adulthood can increase the disease risk. |
| PCB contamination in Icelandic orcas: a matter of diet Posted: 06 May 2021 02:41 PM PDT A new study suggests that some Icelandic killer whales have very high concentrations of PCBs (polychlorinated biphenyls) in their blubber. But it seems that other orcas from the same population have levels of PCBs that are much lower. It mainly depends on what they eat. |
| Swiping, swabbing elevates processing plant food safety Posted: 06 May 2021 02:41 PM PDT By swiping surfaces in commercial food processing plants with specially designed rapid-testing adenosine triphospate (ATP) swabs -- which produce a light similar to the glow of fireflies in the presence of microorganisms -- spoilage and foodborne illness could diminish, according to a new study. |
| Posted: 06 May 2021 02:41 PM PDT How did people living in the Bronze Age manage their finances before money became widespread? Researchers ave discovered that bronze scrap found in hoards in Europe circulated as a currency. These pieces of scrap -- which might include swords, axes, and jewellery broken into pieces -- were used as cash in the late Bronze Age, and in fact complied with a weight system used across Europe. |
| Online learning doesn't improve student sleep habits, research suggests Posted: 06 May 2021 01:36 PM PDT New research suggests that students learning remotely become night owls but do not sleep more despite the time saved commuting, working or attending social events. |
| Organ transplant recipients remain vulnerable to COVID-19 even after second vaccine dose Posted: 06 May 2021 01:36 PM PDT In a new study, researchers show that although two doses of a vaccine against SARS-CoV-2 -- the virus that causes COVID 19 -- confers some protection for people who have received solid organ transplants, it's still not enough to enable them to dispense with masks, physical distancing and other safety measures. |
| 'Molecular glue' makes perovskite solar cells dramatically more reliable over time Posted: 06 May 2021 11:21 AM PDT In a study that could help to bring inexpensive, efficient perovskite solar cells one step closer to commercial use, researchers found a way to strengthen a key weak point in the cells' internal structure, dramatically increasing their functional life. |
| Temperature explains why aquatic life is more diverse near equator Posted: 06 May 2021 11:21 AM PDT New research suggests that temperature can largely explain why the greatest variety of aquatic life resides in the tropics -- but also why it has not always and, amid record-fast global warming, soon may not again. |
| Evading the uncertainty principle in quantum physics Posted: 06 May 2021 11:21 AM PDT In quantum mechanics, the Heisenberg uncertainty principle dictates that the position and speed of an object cannot both be known fully precisely at the same time. Researchers now show that two vibrating drumheads, the size of a human hair, can be prepared in a quantum state which evades the uncertainty principle. |
| Most human origins stories are not compatible with known fossils Posted: 06 May 2021 11:21 AM PDT In the 150 years since Charles Darwin speculated that humans originated in Africa, the number of species in the human family tree has exploded, but so has the level of dispute concerning early human evolution. A new review looks at the major discoveries in hominin origins since Darwin's works and argues that fossil apes can inform us about essential aspects of ape and human evolution, including the nature of our last common ancestor. |
| COVID-19 vaccine delivery by age may mitigate deaths and severe health impacts Posted: 06 May 2021 11:20 AM PDT Strategic vaccine delivery is critical to reducing COVID-19 transmission, mortality and long-term health impacts. A new study suggests that prioritizing vaccine delivery to older age groups and the medically vulnerable has the greatest impact in minimizing loss of life. |
| The cerebellum may have played an important role in the evolution of the human brain Posted: 06 May 2021 11:20 AM PDT The cerebellum -- a part of the brain once recognized mainly for its role in coordinating movement -- underwent evolutionary changes that may have contributed to human culture, language and tool use, according to a new study. |
| Sharks use Earth's magnetic fields to guide them like a map Posted: 06 May 2021 11:20 AM PDT Sea turtles are known for relying on magnetic signatures to find their way across thousands of miles to the very beaches where they hatched. Now, researchers have some of the first solid evidence that sharks also rely on magnetic fields for their long-distance forays across the sea. |
| Artificial color-changing material that mimics chameleon skin can detect seafood freshness Posted: 06 May 2021 11:20 AM PDT Scientists have designed an artificial color-changing material that mimics chameleon skin, with luminogens (molecules that make crystals glow) organized into different core and shell hydrogel layers instead of one uniform matrix. The findings demonstrate that a two-luminogen hydrogel chemosensor developed with this design can detect seafood freshness by changing color in response to amine vapors released by microbes as fish spoils. |
| Healthy young adults who had COVID-19 may have long-term impact on blood vessels and heart health Posted: 06 May 2021 09:58 AM PDT New research highlights the possible long term health impacts of COVID-19 on young, relatively healthy adults who were not hospitalized and who only had minor symptoms due to the virus. |
| Physicists describe new type of aurora Posted: 06 May 2021 09:58 AM PDT The famed northern and southern lights have been studied for millennia, but they still hold secrets. Physicists describe a new phenomenon they call 'diffuse auroral erasers,' in which patches of the background glow are blotted out, then suddenly intensify and reappear. |
| Physicists find a novel way to switch antiferromagnetism on and off Posted: 06 May 2021 09:57 AM PDT Physicists have found a novel way to switch antiferromagnetism on and off, which could lead to faster, more secure memory storage. |
| Blocking viruses' exit strategy Posted: 06 May 2021 09:57 AM PDT Tests of a new antiviral that aims to prevent the deadly Marburg virus from spreading in the body show promise, according to a new study. |
| Shining new light on stepparent fairy-tale stereotype Posted: 06 May 2021 09:57 AM PDT Although the fairy tale of the wicked stepmother is a tale as old as time, the effects of blending children with their new stepfamilies may not be as grim as once thought. In fact, new research shows that stepchildren are not at a disadvantage compared to their peers from single-parent households and actually experience better outcomes than their half-siblings -- good news for the more than 113 million Americans that are part of a step-relationship. |
| COVID-19 vaccine is associated with fewer asymptomatic SARS-CoV-2 infections, study finds Posted: 06 May 2021 09:57 AM PDT St. Jude Children's Research Hospital COVID-19 screening and vaccination program for employees offers early evidence that vaccine protects against asymptomatic infection, which has fueled the pandemic. |
| New study tracked large sharks during hurricanes Posted: 06 May 2021 07:55 AM PDT Biologists tracked large sharks in Miami and The Bahamas to understand how these migratory animals respond to major storms, like hurricanes. |
| First nanoscale look at a reaction that limits the efficiency of generating hydrogen fuel Posted: 06 May 2021 07:54 AM PDT Transitioning to a hydrogen economy will require massive production of cheap, clean hydrogen gas for fuel and chemical feedstocks. New tools allow scientists to zoom in on a catalytic reaction that's been a bottleneck in efforts to generate hydrogen from water more efficiently. |
| Many consumers misinterpret food date labels, yet use them with confidence Posted: 06 May 2021 07:54 AM PDT Misunderstanding food date labeling is common and educational communications are needed to improve consumer understanding, according to a new study. |
| First member of ill-fated 1845 Franklin expedition is identified by DNA analysis Posted: 06 May 2021 07:54 AM PDT The identity of the skeletal remains of a member of the 1845 Franklin expedition has been confirmed using DNA and genealogical analyses by a team of researchers. |
| Pioneering study explores passengers' experiences of self-driving cars in winter conditions Posted: 06 May 2021 07:54 AM PDT Trust, safety and security are the most important factors affecting passengers' attitudes towards self-driving cars. Younger people felt their personal security to be significantly better than older people. The findings are from a study into passengers' attitudes towards, and experiences of, self-driving cars. |
| Alzheimer's study: A Mediterranean diet might protect against memory loss and dementia Posted: 06 May 2021 07:53 AM PDT Alzheimer's disease is caused by protein deposits in the brain and the rapid loss of brain matter. But a Mediterranean diet rich in fish, vegetables and olive oil might protect the brain from these disease triggers. |
| Secret behind maintaining a healthy weight loss Posted: 06 May 2021 07:53 AM PDT Almost one in six people worldwide live with obesity, which may have serious health consequences. Researchers now document how to effectively achieve and maintain a healthy weight loss. |
| One third of patients hospitalized with COVID-19 have lung changes after a year Posted: 06 May 2021 07:53 AM PDT A new study has shown that most patients discharged from hospital after experiencing severe COVID-19 infection appear to return to full health, although up to a third do still have evidence of effects upon the lungs one year on. |
| Just a few atoms thick: New functional materials developed Posted: 06 May 2021 07:53 AM PDT Using the smallest 'construction set' in the world, a research team is designing new materials for computer chips, light-emitting diodes and solar cells. |
| Youngest children in class more likely to be diagnosed with learning disability Posted: 06 May 2021 07:47 AM PDT Children born in December are almost twice as likely to be diagnosed with a learning disorder as those born in January in school districts with a December 31 cut-off date. ADHD was found not to affect the association between month of birth and the likelihood of a learning disability diagnosis. |
| Earliest evidence of humans changing ecosystems with fire Posted: 05 May 2021 11:55 AM PDT A new study provides the earliest evidence to date of ancient humans significantly altering entire ecosystems with flames. The study combines archaeological evidence -- dense clusters of stone artifacts dating as far back as 92,000 years ago -- with paleoenvironmental data on the northern shores of Lake Malawi in eastern Africa to document that early humans were ecosystem engineers. |
| New ant species named in recognition of gender diversity Posted: 05 May 2021 10:05 AM PDT A rare and unusual newly discovered ant from Ecuador has been named Strumigenys ayersthey, with the suffix '-they' chosen in contrast to traditional naming practices which, to date, fail to recognize gender diversity formally. The new species is distinguished by its predominantly smooth and shining cuticle surface and long trap-jaw mandibles. |
| A high-tech textile to stay comfortable outdoors Posted: 05 May 2021 08:14 AM PDT Clothing, from tank tops to parkas, helps people adapt to temperatures outdoors. But you can only put on or take off so much of it, and fluctuations in weather can render what you are wearing entirely inadequate. Researchers now describe a high-tech alternative: a reversible textile they designed to trap warmth in the cold and reflect it during hot weather, all while generating small amounts of electricity. |
| An uncrackable combination of invisible ink and artificial intelligence Posted: 05 May 2021 08:13 AM PDT Coded messages in invisible ink sound like something only found in espionage books, but in real life, they can have important security purposes. Yet, they can be cracked if their encryption is predictable. Now, researchers have printed complexly encoded data with normal ink and a carbon nanoparticle-based invisible ink, requiring both UV light and a computer that has been taught the code to reveal the correct messages. |
| Meet the freaky fanged frog from the Philippines Posted: 05 May 2021 08:13 AM PDT Biologists have described a new species of fanged frog discovered in the Philippines known as the Mindoro Fanged Frog. |
| A new window to see hidden side of magnetized universe Posted: 05 May 2021 08:13 AM PDT New observations and simulations show that jets of high-energy particles emitted from the central massive black hole in the brightest galaxy in galaxy clusters can be used to map the structure of invisible inter-cluster magnetic fields. These findings provide astronomers with a new tool for investigating previously unexplored aspects of clusters of galaxies. |
| Posted: 05 May 2021 08:13 AM PDT With the help of their custom-built super-resolution microscope, biophysicists have discovered where and why mitochondria divide, putting to rest controversy about the underlying molecular machinery of mitochondrial fission. Mitochondria either split in half or cut off their ends to self-regulate. |
| Bees thrive where it's hot and dry: A unique biodiversity hotspot located in North America Posted: 05 May 2021 08:13 AM PDT Rarely has the United States-Mexico border become the source of positive news of lately. However, a new study demonstrates it's one of the world's top biodiversity hotspots for bees. A multi-year survey found more than 470 bee species in 16km2 of Chihuahuan Desert, equivalent to 14% of all known bee species from the United States. |
| Release of drugs from a supramolecular cage Posted: 05 May 2021 08:13 AM PDT How can a highly effective drug be transported to the precise location in the body where it is needed? Chemists now present a solution using a molecular cage that opens through ultrasonification. |
| Microneedles are promising devices for painless drug delivery with minimal side effects Posted: 05 May 2021 08:13 AM PDT A recent study monitors progress in the development of microneedles for immunotherapy and discusses the challenges regarding their production. Researchers suggest using microneedles for immunotherapy due to the abundance of immune cells under the skin. The aim is to vaccinate or treat different diseases, such as cancer and autoimmune disorders, with minimal invasiveness and side effects. |
| 3D bioprinting technique controls cell orientation Posted: 05 May 2021 08:13 AM PDT Scientists have developed a new approach for directing cell orientation within deposited hydrogel fibers via a method called multicompartmental bioprinting. |
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