306 articles from MONDAY 24.5.2021
Most children with post-Covid disease recover within six months, study finds
Small study looks at complications affecting tiny minority of children, which had caused major concernCoronavirus – latest updatesSee all our coronavirus coverageChildren at a leading London hospital who were admitted with a rare but severe illness as a result of coronavirus infection had made a good recovery by the end of six months, although some needed ongoing physical therapy or mental...
Vaccine waitlist Dr. B collected data from millions. But how many did it help?
When Joanie Schaffer heard about Dr. B, a free covid-19 vaccine standby service, she was running out of options. It was early February, and vaccine appointments were scarce, so Schaffer, who was already vaccinated herself, was volunteering her time to help friends, family, and even strangers secure their shots. She had read stories about people…
Rubisco proton production can enhance carbon dioxide acquisition
Rubisco is arguably the most abundant—and most important—protein on Earth. This enzyme drives photosynthesis, the process that plants use to convert sunlight into energy to fuel crop growth and yield. Rubisco's role is to capture and fix carbon dioxide (CO2) into sugar that fuels the plant's activities. However, as much as Rubisco benefits plant growth, it also can operate at a notoriously...
New study shines light on hazards of Earth's largest volcano
Scientists from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science analyzed ground movements measured by Interferometric Synthetic Aperture Radar (InSAR) satellite data and GPS stations to precisely model where magma intruded and how magma influx changed over time, as well as where faults under the flanks moved without generating significant earthquakes. The GPS...
Chemical changes to peptide siRNA-carrier enhance gene silencing for future cancer drugs
- ScienceDaily
- 21/5/24 22:18
Researchers found a modified peptide carrier that was delivering the siRNA drug by adhering to and potentially moving along cell filopodia, leading to more efficient cell entry and improved gene silencing.
Sterile male mosquitoes created using CRISPER/Cas9
- ScienceDaily
- 21/5/24 22:18
Mosquitoes are one of humanity's greatest nemeses, estimated to spread infections to nearly 700 million people per year and cause more than one million deaths.
Fat around the heart linked to increased risk of heart failure
- ScienceDaily
- 21/5/24 22:18
Study shows risk doubles in women and goes up by 50 percent in men.
Full-genome CRISPR screen reveals surprising ways neurons survive oxidative stress
- ScienceDaily
- 21/5/24 22:18
When a single gene in a cell is turned on or off, its resulting presence or absence can affect the function and survival of the cell. Researchers have now successfully catalogued this effect in the human neuron by separately toggling each of the 20,000 genes in the human genome.
A seedy slice of history: Watermelons actually came from northeast Africa
- ScienceDaily
- 21/5/24 22:18
Using DNA from greenhouse-grown plants representing all species and hundreds of varieties of watermelon, scientists discovered that watermelons most likely came from wild crop progenitors in northeast Africa. The study corrects a 90-year-old mistake that had previously tied watermelons to South Africa. The genetic research is consistent with newly interpreted Egyptian tomb paintings that suggest...
How do clownfish earn their stripes?
- ScienceDaily
- 21/5/24 22:18
Clownfish are instantly recognizable by their white stripes, which appear as they mature from larvae into adults. But how these distinctive patterns form has long remained a mystery. Now, a new study has found that the speed at which these white bars form depends on the species of sea anemone in which the clownfish live. The scientists also discovered that thyroid hormones, which play a key role...
Milky Way not unusual, astronomers find
- ScienceDaily
- 21/5/24 22:18
The first detailed cross-section of a galaxy broadly similar to the Milky Way reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt.
Greenland glacial meltwaters rich in mercury
- ScienceDaily
- 21/5/24 22:18
New research shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood.
Plant-microbe homeostasis: A delicate balancing act
- ScienceDaily
- 21/5/24 22:18
Scientists have shown that the presence of both immune-suppressive and non-suppressive bacteria in the plant root microbiota is crucial to strike a balance between plant growth and plant defense, and maintain plant-microbe homeostasis.
How tendons become stiffer and stronger
- ScienceDaily
- 21/5/24 22:18
Researchers deciphered the cellular mechanisms through which tendons can adapt to mechanical stresses. People who carry a certain variant of a gene that is key to this mechanism show improved jumping performance.
Infertility poses major threat to biodiversity during climate change, study warns
- ScienceDaily
- 21/5/24 22:17
A new study by ecologists warns that heat-induced male infertility will see some species succumb to the effects of climate change earlier than thought. Currently, scientists are trying to predict where species will be lost due to climate change so they can plan effective conservation strategies. However, research on temperature tolerance has generally focused on the temperatures that are lethal to...
Endangered wallaby population bounces back after ferals fenced out
- ScienceDaily
- 21/5/24 22:17
Scientists have used a new conservation strategy to give the bridled nailtail wallaby a head start in life.
Bile acids trigger satiety in the brain
- ScienceDaily
- 21/5/24 22:17
Scientists have discovered a new role for bile acids: they curb appetite by entering the brain. Their findings provide new insights into the signals and mechanisms by which satiety is controlled and may have implications for treating obesity.
With a kitchen freezer and plant cellulose, an aerogel for therapeutic use is developed
- ScienceDaily
- 21/5/24 22:17
A new low-cost and sustainable technique would boost the possibilities for hospitals and clinics to deliver therapeutics with aerogels, a foam-like material now found in such high-tech applications as insulation for spacesuits and breathable plasters.