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Science News

Location American Science News for 18 Sep 2023

The limits of nuclearNew research is challenging the scientific status quo on the limits of the nuclear chart in hot stellar environments where temperatures reach billions of degrees Celsius.
Researchers use liquid metalResearchers have developed a new method for making tiny stretchable antennas from a hydrogel and liquid metal. The antennas could be used in wearable and flexible wireless electronic devices to... provide a link between the device and external systems for power delivery, data processing and communication.
SLAC fires up the world's mostThe newly upgraded Linac Coherent Light Source (LCLS) X-ray free-electron laser (XFEL) at the Department of Energy's SLAC National Accelerator Laboratory successfully produced its first X-rays, and... researchers around the world are already lined up to kick off an ambitious science program.

Mystery Behind Neuron Death in Alzheimer's Decoded

Neuroscience News - 18 Sep 2023 22:31
Mystery Behind Neuron Death inResearchers have unveiled the mystery behind neuron death in Alzheimer's disease. A groundbreaking study reveals that neurons undergo a programmed cell death, necroptosis, when exposed to amyloid... plaques and tau tangles, hallmark proteins linked to Alzheimer's.
Early medieval warrior foundArchaeologists think the man died during the Merovingian period, an early stage of the Germanic-speaking empire of the Franks.
Unveiling the invisible: APolarimetric imaging can uncover features invisible to human eyes and conventional imaging sensors, and it is becoming an ever more essential technique in modern society. Conventional polarimetric... imaging systems require complex optical components and moving parts, making system miniaturization difficult.
How Babies Unravel the OriginResearchers delved into the age-old question of agency, using human infants as their study subjects. By tethering an infant's foot to a crib-mounted mobile, they observed the moment a baby realizes... they can influence the environment.
We now know how many cellsNew estimates for the number of cells in adults and children draw on over 1500 scientific papers detailing the different cell and tissue types in our bodies

Motherhood's Brain Blueprint: How Pregnancy Rewires Us

Neuroscience News - 18 Sep 2023 21:45
Motherhood's Brain Blueprint:Researchers have delved into the neurobiological evolution during pregnancy and postpartum, shining a light on brain changes and maternal behavior. Hormonal fluctuations, especially related to... estrogens, are believed to induce brain plasticity during these periods.
Genetic Link Between EatingA comprehensive study of adolescent twins unveils a genetic nexus between disordered eating and alcohol use disorders (AUDs). This correlation underscores worse outcomes, including fatality,... especially when these conditions manifest simultaneously in younger teens.
Cancer screening may notA new analysis of screening tests for four types of cancer suggests that only one actually increases life span, on average. But what do scientists think?
Live Imaging Reveals AxonFor the first time, researchers observed nerve plasticity within the axon in real-time. This adaptability focuses on the axon initial segment (AIS), a vital nerve cell component initiating electrical... signals.
Kidneys for transplantationOrgan donation from newborn babies currently happens very rarely, but could save more lives if hospitals were more open to it
The Molecular Mechanisms ofResearchers reveal the intricate ways individual neurons communicate, even within the same type. Through their research on Drosophila fruit flies, they spotlight a protein, Complexin, responsible for... curbing spontaneous neurotransmitter chatter.
Researchers explore theorizedA team of international researchers, led by experts at the University of Adelaide, has uncovered further clues in the quest for insights into the nature of dark matter.
Mysterious flashes on VenusBright flashes in the clouds of Venus once thought to be lightning strikes may have a cosmic origin.
Upconversion photoluminescenceLanthanide-doped upconversion nanoparticles (UCNPs) demonstrate many superior properties of broadly-tunable multicolor emission and long emission lifetimes. This makes them well-suited for many... light-emission applications. Despite many advantages, the further progress and practical applications of UCNPs face significant challenges.
2 liver-eating orcas forced anResearchers have discovered that hundreds of great white sharks that vanished from their home off the Western Cape of South Africa have moved east in order to survive -- but this could spell trouble... for both the sharks and the people living there.
Spinal fluid test may enablePeople with Parkinson's disease have been found to have high levels of an enzyme called DOPA decarboxylase in the fluid around their brain and spinal cord
How scientists are crackingDeciphering encrypted messages from centuries past is a painstaking process. But linguists and computer scientists are starting to automate it, with some sensational results
Watch elusive, sucker-lessFootage of the rare squid, Grimalditeuthis bonplandi, was captured for only the 2nd time ever during an expedition to explore hydrothermal vents off the Galapagos Islands.
Plumbing the depths ofThermoelectrics enable the direct conversion of heat into electrical energy--and vice versa. This makes them interesting for a range of technological applications. In the search for thermoelectric... materials with the best possible properties, a research team at the Vienna University of Technology (TU Wien) investigated various metallic alloys. A mixture of nickel and gold proved particularly promising. The researchers have published their results in Science Advances.
Scalable multipartiteResearchers from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), in collaboration with researchers from Tsinghua University, led by Ma Xiongfeng, and... Fudan University, led by Zhou You, have achieved significant advancements in the preparation and measurement of scalable multipartite entangled states.
Researchers uncoverMott insulators are a peculiar class of materials with structures that should theoretically conduct electricity, but that are instead insulators. These materials contain strongly correlated electrons,... which can generate highly entangled many-body states marked by unconventional excitations.
New quasi-particle bridgesIn a paper published today (Sept. 18) in Nature Communications, researchers from the Paul-Drude-Institut in Berlin, Germany, and the Instituto Balseiro in Bariloche, Argentina, demonstrated that the... mixing of confined quantum fluids of light and GHz sound leads to the emergence of an elusive phonoriton quasi-particle--in part a quantum of light (photon), a quantum of sound (phonon) and a semiconductor exciton. This discovery opens a novel way to coherently convert information between optical and microwave domains, bringing potential benefits to the fields of photonics, optomechanics and optical communication technologies.