- PhysOrg
- 22/4/20 23:15
A new analysis of archaeological sites in the Americas challenges relatively new theories that the earliest human inhabitants of North America arrived before the migration of people from Asia across the Bering Strait.
193 articles from WEDNESDAY 20.4.2022
A new analysis of archaeological sites in the Americas challenges relatively new theories that the earliest human inhabitants of North America arrived before the migration of people from Asia across the Bering Strait.
A beautiful sunset over the Atlantic off the Florida coast, or an orangey glow in the Texas sky at dusk may be caused by dust from West Africa, according to researchers who are looking at the paths of particulate matter in the skies over the Sahara desert and the semi-arid Sahel.
With a sponge that looks like one you might find in your kitchen, Northwestern University researchers have discovered how to effectively clean up oil, microplastics and phosphate pollution.
As a University of Arizona professor of astronomy and planetary sciences who studies planets orbiting other stars, Daniel Apai spends much of his time thinking about what makes worlds habitable.
Up to half of older adults may have sleep apnea, a condition in which breathing and sleep are briefly interrupted many times a night. A new study shows that this chronic tiredness can have serious implications for road safety.
Scientists describe novel methods for inferring the movement of human brain cells during fetal development by studying healthy adult individuals who have recently passed away from natural causes.
One of the most important molecules in the brain doesn't work quite the way scientists thought it did, according to new work.
A beautiful sunset over the Atlantic off the Florida coast, or an orangey glow in the Texas sky at dusk may be caused by dust from West Africa, according to researchers who are looking at the paths of particulate matter in the skies over the Sahara desert and the semi-arid Sahel.
Fun and games could be a solution to serious problems like preeclampsia and hypertension among pregnant people and holds promise for significant progress, according to a new study. Researchers found that gamification—broadly defined as the use of specially engineered games to stimulate learning and behavioral change—could generate greater levels of exercise in postpartum individuals who...
The new analysis suggests that misinterpretation of archaeological evidence at certain sites in North and South America might be responsible for theories that humans arrived long before 13,000-14,200 years ago.
Researchers have found that the KLF4 gene is reprogrammed at the onset of acute promyelocytic leukaemia (APL), an aggressive type of blood cancer that is responsible for 5-15% of all types of leukemia. Overexpressing KLF4 suppressed the self-renewal traits of cancerous cells and reversed the effects caused by the actions of oncofusion events that cause the disease. The findings pave the way for...
The test version of a unique satellite navigation receiver has been delivered for integration testing on the Lunar Pathfinder spacecraft. The NaviMoon satnav receiver is designed to perform the farthest ever positioning fix from Earth, employing signals that will be millions of times fainter than those used by our smartphones or cars.
The U.S. Department of Energy has formally approved the start of full construction for the PIP-II project, an essential upgrade to the accelerator complex at Fermi National Accelerator Laboratory. The heart of the project is a powerful new superconducting linear accelerator that will enable the world's most intense high-energy neutrino beam.
Communication seems natural to us, but there are plenty of situations where background noise makes it hard for us to understand each other. In those moments, gesturing can come in handy, particularly if conversations in your native language are taking place in the background. This has been shown in research by psycholinguist Veerle Wilms in cooperation with Susanne Brouwer and Linda Drijvers....
The Sun emitted two solar flares on April 19, 2022, one moderate peaking at 9:35 p.m. EST and one strong peaking at 11:57 p.m. EST. NASA's Solar Dynamics Observatory, which watches the Sun constantly, captured an image of both events.
The antibody function known as antibody dependent cellular cytotoxicity (ADCC) and the ADCC sensitivity of HIV strains may influence the transmission of HIV from mother to child during breastfeeding. These data imply that enhancing ADCC, through a vaccine, for example, may not be sufficient to prevent transmission because chronically infected individuals can harbor ADCC-resistant strains. The...
In proof-of-concept experiments, scientists say they have successfully cultivated human muscle stem cells capable of renewing themselves and repairing muscle tissue damage in mice, potentially advancing efforts to treat muscle injuries and muscle-wasting disorders in people.
Two new studies provide insights into what additional limits on abortion care could mean, particularly for those who will have to travel across state lines. Distance to care will increase substantially and access barriers will be inequitable, researchers say.
When U.S. couples have their first child, mothers' earnings still drop substantially relative to fathers', and new research demonstrates the stubborn, decades-old pattern isn't changing despite broad increases in other aspects of gender equality.
A survey of veterinarians in the U.S. and Canada highlights mounting cases of cannabis poisoning among pets and sheds new light on symptoms, treatments, and outcomes.
From 2003 through 2020, as opioid-related mortality in Ontario, Canada increased five-fold, the age distribution also shifted downward -- with rates now peaking for people in their mid-30s -- according to a new study.
Over time, using antidepressants is not associated with significantly better health-related quality of life, compared to people with depression who do not take the drugs, according to a new study.
Stones that were incised with artistic designs around 15,000 years ago have patterns of heat damage which suggests they were carved close to the flickering light of a fire, a new study has found.
New research on mice shows for the first time that the microbes in animals' guts influence what they choose to eat, making substances that prompt cravings for different kinds of foods.