Materials Science

Self‑building molecular rings bring next‑generation drug delivery and smart materials closer

Rotaxanes are dumbbell-shaped mechanically interlocked molecules in which one or more ring-shaped molecules are threaded through a linear segment, known as the axle. To keep the ring from sliding off, two bulky groups, sometimes ...

Earth Sciences

Patterned frozen soils get their shape from gravity and funky physics

Hillslopes in Arctic regions with frozen soils can host a suite of geometric patterns, from circles and stripes to polygonal patterned ground. They can also have solifluction patterns, or markings left behind when partially ...

Immune cells get transformed into fungus-fighting nanoparticles

Tiny particles made from the membranes of human immune cells could offer a promising new way to fight fungal infections that are becoming harder to treat. Engineers at the University of California San Diego created antifungal ...

Demystifying the molecular mechanisms of general anesthesia

Researchers at Weill Cornell Medicine and Birkbeck, University of London, have identified a site where a commonly used anesthetic binds to sodium ion channels, revealing a molecular mechanism that may explain how these drugs ...

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Tech Xplore

Firefighters gain upper hand on deadly Spain wildfire

Firefighters battling a wildfire in southern Spain that killed 12 people began to contain the blaze Saturday as the hardest-hit village remained deserted, with charred vegetation and blackened homes a grim reminder of the ...

New heat wave blasts US, could break records

Some 44 million Americans were under a heat wave warning Saturday as temperatures in the Rocky Mountains and northern Plains of the United States were expected to hit 43°C (110°F) over the weekend.

Managing water with local wisdom and science

Across a narrow watershed in Asakura, a rural city in Fukuoka Prefecture, centuries-old stone channels still guide water through fields and into the river below. Today, those same systems are the focus of researchers at Kyushu ...