Search results for stone spheres

Bio & Medicine Mar 13, 2024

Sugar-coated gold nanoparticles can quickly eliminate bacterial infections, no antibiotics required

If left to their own devices, bacteria on our teeth or wounded skin can encase themselves in a slimy scaffolding, turning into what is called biofilm. These bacteria wreak havoc on our tissue and, being shielded from antibiotic ...

Nanomaterials Jan 16, 2024

Chemists find new way to rid boron nitride nanotubes of impurities

Very strong, light materials that can withstand extremely high temperatures could usher in next-generation spacecraft, enhance current devices or enable the development of new biomedical imaging or hydrogen storage applications, ...

Optics & Photonics Nov 8, 2023

Picking up the statistics of good vibrations in Brillouin-Mandelstam scattering

Experiments with single-photon detectors have revealed surprising statistics of light created via interactions with high-frequency sound waves.

Archaeology Sep 10, 2023

Early humans deliberately made mysterious stone 'spheroids'

The early ancestors of humans deliberately made stones into spheres 1.4 million years ago, a study said on Wednesday, though what prehistoric people used the balls for remains a mystery.

Archaeology Sep 5, 2023

The limestone spheroids of 'Ubeidiya: Intentional imposition of symmetric geometry by early hominins?

Limestone spheroids, enigmatic lithic artifacts from the ancient past, have perplexed archaeologists for years. While they span from the Oldowan to the Middle Paleolithic, the purpose behind their creation remains a subject ...

General Physics Jul 13, 2023

Skipping stones: Researchers uncover dynamics of buoyant spheres at air-water interface

Inspired by the need to safeguard marine animals and promote sustainable solutions within marine environments, an interdisciplinary team of researchers from King Abdullah University of Science and Technology in Saudi Arabia ...

Soft Matter May 18, 2023

Researchers transform our understanding of crystals

When most people think of crystals, they picture suncatchers that act as rainbow prisms or the semi-transparent stones that some believe hold healing powers. However, to scientists and engineers, crystals are a form of materials ...

Space Exploration Mar 8, 2023

NASA gathering tools that can assess damage, verify parts made in space

An ensemble of microscopes, medical-style equipment, and other 3D scanners is providing insights that could help human and robotic explorers survive the harsh environments of deep space, the moon, Mars and beyond.

Evolution Jan 16, 2023

Most humans haven't evolved to cope with the cold, yet we dominate northern climates—here's why

Humans are a tropical species. We have lived in warm climates for most of our evolutionary history, which might explain why so many of us spend winter huddled under a blanket, clutching a hot water bottle and dreaming of ...

Plants & Animals Jan 12, 2023

How immortal jellyfish turn back time

Achieving immortality is something that has driven human beings throughout much of their history. Many peculiar legends and fables have been told about the search for the elixirs of life. Medieval alchemists worked tirelessly ...

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