Mechanical buckling of petals produces iridescent patterns visible to bees
Peer-Reviewed Publication
Flowers are employing a materials science phenomenon typically associated with failures in structural engineering to produce exquisite three-dimensional petal patterns to lure pollinators.
Researchers at Baylor College of Medicine have discovered changes in the brain, triggered byLSD, that may explain the profound altered behavior associated with LSD, helping to understand how the brain generates behavior.
A UChicago and Argonne National Laboratory study analyzing over 15,000 individual synapses in macaques and mice found that primate neurons have two to five times fewer synapses in the visual cortex compared to mice – and the difference may be due to the metabolic cost of maintaining synapses.
A new study suggests that all living snakes evolved from a handful of species that survived the giant asteroid impact that wiped out the dinosaurs and most other living things at the end of the Cretaceous. The authors say that this devastating extinction event was a form of ‘creative destruction’ that allowed snakes to diversify into new niches, previously filled by their competitors.
In The Journal of the Acoustical Society of America, published by the Acoustical Society of America through AIP Publishing, researchers from Stellantis and Laboratoire d’Acoustique de l'Universite du Mans outline an algorithm that adapts personalized sound zones within a car to changes in seat position, allowing riders to listen to their own audio without headphones and interruption.
In Physics of Fluids, by AIP Publishing, researchers from the Indian Institute of Science studied the fate of a large-sized surrogate cough droplets at different velocities, corresponding from mild to severe, while using various locally procured fabrics as masks.
In Physics of Fluids, by AIP Publishing, scientists from the Indian Institute of Science and the Narayana Nethralaya Foundation explain how tears ejected from the eye during a procedure that tests for glaucoma can theoretically transmit disease.
What The Study Did: This analysis of survey data examined changes between 2001 and 2018 in the concentration of health care spending in different population groups and categories such as prescription drugs in the United States.
What The Study Did: Researchers document the antibody response to a second dose of Pfizer-BioNTech (BNT162b2) vaccine in a group of 117 allogeneic hematopoietic (from a donor) stem cell transplant recipients.
What The Study Did: In this single-center study in Libreville, Gabon, from March to June 2020 of 837 patients with COVID-19, 63% had no symptoms. Severity of disease and death were associated with advanced age and advanced stage of lung damage.
Reducing naturally occurring errors in protein synthesis (production) improves both health and lifespan, finds a new study in simple model organisms led by researchers at UCL and MRC London Institute of Medical Sciences.
Bottom Line: The U.S. Preventive Services Task Force (USPSTF) recommends that all sexually active women 24 or younger and women 25 or older at increased risk for infection be screened for chlamydia and gonorrhea. The USPSTF concludes current evidence is insufficient to make a recommendation about screening for these infections in men. Chlamydia and gonorrhea are among the most common sexually transmitted infections in the United States, with approximately 1.8 million cases of chlamydia and more than 600,000 cases of gonorrhea reported to the Centers for Disease Control and Prevention in 2019. The USPSTF routinely makes recommendations about the effectiveness of preventive care services and this updated statement is consistent with its 2014 recommendation.