884,638 articles


A new way to identify stresses in complex fluids

Fluid dynamics researchers use many techniques to study turbulent flows like ocean currents, or the swirling atmosphere of other planets. Arezoo Adrekani's team has discovered that a mathematical construct used in these fields provides valuable information about stress in complex flow geometries.

UV lamps used for disinfection may impair indoor air quality

Using ultraviolet germicidal radiation (UVGI) to disinfect indoor spaces is a demonstrably effective way of deactivating various pathogens (including the SARS-CoV-2 coronavirus). It deactivates bacteria and viruses by exposing them to high-energy UV radiation through the use of UV lamps.

Newly-named species of tree-dwelling snakes threatened by mining

Five new tree-dwelling snake species were discovered in the jungles of Ecuador, Colombia, and Panama. Conservationists Leonardo DiCaprio, Brian Sheth, Re:wild, and Nature and Culture International chose the names for three of them in honor of loved ones while raising awareness about the issue of rainforest destruction at the hands of open-pit mining operations. The research was conducted by...

Instrument on JWST has gone offline

The JWST is having a problem. One of its instruments, the Near Infrared Imager and Slitless Spectrograph (NIRISS), has gone offline. The NIRISS performs spectroscopy on exoplanet atmospheres, among other things.

An AI bot passed this Wharton professor's exam. Here's why he's not concerned

Wharton professor Christian Terwiesch was sitting with his grown children around the dinner table when the subject of artificial intelligence came up. Both of his kids had been experimenting with the nascent technology in their respective fields: "one of them is interested in design...and the other one is interested in computer science."

Looking back at the Tonga eruption

A new analysis of seismic data recorded after the massively violent eruption of the underwater volcano Hunga Tonga-Hunga Ha'apai, on January 15, 2022, has revealed new and useful information on the sequence of events. Kotaro Tarumi and Kazunori Yoshizawa at Hokkaido University discuss their methods and findings in an article in Earth and Planetary Science Letters.

Starry tail tells the tale of dwarf galaxy evolution

A giant diffuse tail of stars has been discovered emanating from a large, faint dwarf galaxy. The presence of a tail indicates that the galaxy has experienced recent interaction with another galaxy. This is an important clue for understanding how so called 'ultra-diffuse' galaxies are formed.