Manipulating collective motions of electrons and solvent molecules in a polar liquid
Researchers at the Max-Born-Institute have now mapped the linear and nonlinear optical polaron response using ultrafast two-dimensional spectroscopy in the THz frequency range. As they discuss in the current issue of Physical Review Letters, multi-ph.....»»
In the gateway to the Arctic, fat, ice and polar bears are crucial. All three are in trouble.
Searching for polar bears where the Churchill River dumps into Canada's massive Hudson Bay, biologist Geoff York scans a region that's on a low fat, low ice diet because of climate change......»»
Extreme polar light environment of the North and South Poles sustains biodiversity, researchers suggest
Researchers working in Finland propose that the unique light environment of the Earth's polar regions creates conditions that result in circumpolar hybrid zones around the North and the South Poles. These extreme conditions increase the synchrony of.....»»
First polar bear spotted in Iceland since 2016 is shot dead by police
A polar bear was spotted in Iceland for the first time since 2016—and was promptly shot dead by police......»»
New data science tool greatly speeds up molecular analysis of our environment
A research team led by scientists at the University of California, Riverside, has developed a computational workflow for analyzing large data sets in the field of metabolomics, the study of small molecules found within cells, biofluids, tissues, and.....»»
How a bacterial pathogen that causes dysentery manipulates molecular activity to assure its survival
Virginia Tech researchers have learned how bacteria manipulate molecules to infect the host organism. Daniel Capelluto and his research team have discovered the mechanism by which the bacterial pathogen Shigella flexneri, the causative agent of dysen.....»»
Analysis of heterostructures for spintronics shows how two desired quantum-physical effects reinforce each other
Spintronics uses the spins of electrons to perform logic operations or store information. Ideally, spintronic devices could operate faster and more energy-efficiently than conventional semiconductor devices. However, it is still difficult to create a.....»»
Scientists say there is enough evidence to agree to global action on microplastics
Science has provided more than sufficient evidence to inform a collective and global approach to tackle the continued spread of plastic pollution, according to a new report......»»
Detailed model suggests organic matter on Mars was formed from atmospheric formaldehyde
Although Mars is currently a cold, dry planet, geological evidence suggests that liquid water existed there around 3 to 4 billion years ago. Where there is water, there is usually life. In their quest to answer the burning question about life on Mars.....»»
Arctic warming may fuel ice formation in clouds, observations suggest
The Arctic frequently experiences temperatures that support the formation of mixed-phase clouds that contain supercooled liquid droplets and ice crystals. The composition of such clouds plays a crucial role in the region's energy balance and climate.....»»
Groundwater cleanup boost: Tailoring 3D media for DNAPL contaminant removal
Groundwater contamination by organic pollutants, such as non-aqueous phase liquid (DNAPL), poses significant environmental and health risks. These contaminants, often released from industrial activities, can persist in the subsurface environment, for.....»»
First liquid-liquid extraction trial finds porous liquids can separate harmful or unwanted alcohols from mixtures
A world-first study has successfully used porous liquids to achieve liquid-liquid separation for the first time, creating exciting potential for advancing both environmental sustainability and public health......»»
How to prepare for a stormy "supercharged" September
The effects of climate change have become an ominous presence in our lives, and the dramatic media monikers that accompany them—bomb cyclones, atmospheric rivers, thundersnow, black swan events, heat domes, polar vortexes—sound almost biblical......»»
Open Wave-Receivers featured in ‘Living Radio Lab’ film
Living Radio Lab (2023) is a film by Francesca Oldfield that documents Shortwave Collective’s contribution to the Struer Tracks biennial of sound and listening, which took place on August 23-27, 2023 in Struer, Denmark. Shortwave Collective wrote.....»»
Low-noise amplifiers aboard the Arctic Weather Satellite
The Arctic Weather Satellite (AWS) of the European Space Agency (ESA) was sent on its journey to a polar orbit 600 km above the Earth on August 16, 2024. On board: four low-noise amplifiers (LNAs) from the Fraunhofer Institute for Applied Solid State.....»»
Team discovers naturally occurring DNA-protein hybrids
Thanks to a serendipitous discovery and a lot of painstaking work, scientists can now build biohybrid molecules that combine the homing powers of DNA with the broad functional repertoire of proteins—without having to synthesize them one by one, res.....»»
Synthetic mini-motor: Researchers convert chemical energy into rotational energy at the supramolecular level
Researchers at the Technical University of Munich (TUM) have developed an artificial motor at the supramolecular level that can develop impressive power. This wind-up motor is a tiny ribbon made of special molecules. When energy is applied, this ribb.....»»
Optogenetic control reveals collective cell behavior
New research led by the Institute for Bioengineering of Catalonia (IBEC) has studied the migratory movement of groups of cells using light control. The results show that there is no leader cell that directs the collective movement, as previously thou.....»»
Symmetry model sheds light on the chemistry surrounding peptide helices
Helices are structures found naturally in many important molecules, such as proteins. These helices possess a twist that depends on the arrangement of their basic components. By understanding how a helix is formed, we can gain deeper insights into ho.....»»
Beyond displays: Liquid crystals in motion mimic biological systems
Liquid crystals are all around us, from cell phone screens and video game consoles to car dashboards and medical devices. Run an electric current through liquid crystal displays (LCDs) and they generate colors, thanks to the unique properties of thes.....»»
New strategy for simulating nonadiabatic dynamics of molecules at metal surfaces
A research team has proposed a novel approach to accurately describe electron transfer mediated nonadiabatic dynamics of molecules at metal surfaces. Their works were published in Physical Review Letters......»»