Phys.org news

Phys.org / Orange pigments in birds and human redheads prevent cellular damage, study shows

A pigment that makes feathers and hair orange helps prevent cellular damage by removing excess cysteine from cells. Pheomelanin is an orange-to-red pigment that is built with the amino acid cysteine and found in human red ...

19 hours ago in Biology
Phys.org / Programmable microparticles morph and self-propel under electrical fields

Researchers at CU Boulder have created tiny, microorganism-inspired particles that can change their shape and self-propel, much like living things, in response to electrical fields.

15 hours ago in Nanotechnology
Phys.org / Young galaxies grow up fast: Research reveals unexpected chemical maturity

Astronomers have captured the most detailed look yet at faraway galaxies at the peak of their youth, an active time when the adolescent galaxies were fervently producing new stars.

16 hours ago in Astronomy & Space
Phys.org / Black hole shreds distant 'super sun,' unleashing a spectacular event known as the Whippet

A black hole has shredded a massive star like it was "preparing a snack for lunch," according to a team of scientists at the American Astronomical Society's annual meeting (5–8 January).

19 hours ago in Astronomy & Space
Phys.org / Dentin inside wolffish teeth is a rare material: When compressed along its length—it also shrinks in width

The Atlantic wolffish is known for its powerful bite, capable of crushing hard-shelled prey with ease. Now, researchers have discovered that the fish's teeth don't just withstand these extreme forces, they respond in a way ...

16 hours ago in Biology
Phys.org / New tools turn grain crops into living biosensors

A collaborative team of researchers from the Donald Danforth Plant Science Center, the University of Florida, Gainesville and University of Iowa have developed tools that allow grasses—including major grain crops like corn—to ...

16 hours ago in Biology
Phys.org / Superheated sediments in a submarine pressure cooker—an unexpected source of deep-sea hydrogen

The mid-ocean ridge runs through the oceans like a suture. Where Earth's plates move apart, new oceanic crust is continuously formed. This is often accompanied by magmatism and hydrothermal activity. Seawater seeps into the ...

16 hours ago in Earth
Phys.org / Single-atom photocatalyst enables green, oxidant-free C–H cross-coupling reactions

Chemists from the National University of Singapore (NUS) have developed a single-atom photocatalytic strategy that enables oxidant-free cross-dehydrogenative coupling (CDC) reactions between ring-shaped aromatic molecules ...

16 hours ago in Chemistry
Phys.org / Electrons that lag behind nuclei in 2D materials could pave way for novel electronics

One of the great successes of 20th-century physics was the quantum mechanical description of solids. This allowed scientists to understand for the first time how and why certain materials conduct electric current and how ...

17 hours ago in Physics
Phys.org / 'Stomata in-Sight' system allows scientists to watch plants 'breathe' in real-time

For centuries, scientists have known that plants "breathe" through microscopic pores on their leaves called stomata. These tiny valves are the gatekeepers that balance the intake of carbon dioxide into the leaf for photosynthesis ...

17 hours ago in Biology
Phys.org / From pint to plate, scientists brew up a new way to grow meat

Yeast left over from brewing beer can be transformed into edible "scaffolds" for cultivated meat—sometimes known as lab-grown meat—which could offer a more sustainable, cost-effective alternative to current methods, according ...

18 hours ago in Biology
Phys.org / Direct 3D printing of nanolasers can boost optical computing and quantum security

In future high-tech industries, such as high-speed optical computing for massive AI, quantum cryptographic communication, and ultra-high-resolution augmented reality (AR) displays, nanolasers—which process information using ...

18 hours ago in Nanotechnology