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Optics & Photonics 36 minutes ago

Terahertz imaging maps spatial chirality in materials with 100-micrometer resolution

In nature, there exist structures that are mirror images of each other but cannot be perfectly superimposed. These are known as chiral objects, derived from the Greek word for "hand," since left and right hands share the ...

General Physics 56 minutes ago

Violent rocket particles could reshape future spacecraft design

When rockets fire into space, the insides of their engines become an extreme environment where temperatures soar and tiny particles are thrown around at hypersonic speeds. These particles behave in ways that break long-held ...

Environment 2 hours ago

Climate-based tool predicts coral bleaching months in advance, offering critical lead time for reef protection

Researchers at the Woods Hole Oceanographic Institution (WHOI) have developed a new method to predict coral bleaching five to six months before it occurs, giving reef managers valuable time to protect vulnerable ecosystems. ...

Nanomaterials 2 hours ago

Atomic reshuffle leads to record-breaking catalysts for hydrogen production

Researchers have discovered that atoms can be mixed, separated, and recombined within the same experiment, providing a pathway to a record-breaking catalyst for green hydrogen production. In their study, the team created ...

Environment 4 hours ago

Environmental engineers reshape understanding of airborne pollution particles

From sizzling bacon in the kitchen to wildfire smoke in the sky, cooking and pollution release microscopic particles that affect humans' health, the air they breathe, and even weather and climate. New research from Virginia ...

Evolution 5 hours ago

Life in the ancient Arctic: Tiny teeth of newly discovered species suggest it was a cradle of mammalian evolution

A fossil mammal tooth smaller than a grain of rice does not announce itself loudly. It must be hard won from sediment and stone. Then, under a microscope, it reveals itself—no longer just a speck of blackness but a surface ...

Ecology 6 hours ago

Single cell transforms into cannibalistic 'supergiant,' swallowing its clones whole

Researchers at Rensselaer Polytechnic Institute (RPI) have discovered a microscopic organism that can transform into a cannibalistic "supergiant" that drastically changes size, shape, and behavior, and abandons filter-feeding ...

Ecology 7 hours ago

Ancient altercations between musk turtles and alligator gar recorded in Florida's fossil record

Sometime between 5.5 and 5.6 million years ago, two shell crushers squared off in the languid currents of an ancient Florida river. The fossils they left behind, discovered by paleontologists at the Florida Museum of Natural ...

Planetary Sciences 9 hours ago

'Mini-Neptune' exoplanets may have smoggy atmospheres similar to diesel exhaust

The astronauts circling Earth on the Artemis mission sent back beautiful clear photos of the continents, clouds, and oceans. But we might be the exception. Many planets in the universe may be hazed in clouds of soot, according ...

Archaeology 9 hours ago

Britain's oldest cave art may have been rediscovered in Bacon Hole cave

The oldest cave art in Britain may have been discovered, or more likely rediscovered, in a cave on the Gower Peninsula in South Wales, possibly dating back around 17,000 years.

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