Phys.org news
Phys.org / 60,000-year-old traces of world's oldest arrow poison reveal early advanced hunting techniques
Researchers from South Africa and Sweden have found the oldest traces of arrow poison in the world to date. On 60,000-year-old quartz arrowheads from Umhlatuzana Rock Shelter in KwaZulu-Natal, South Africa, researchers have ...
Phys.org / Optics research uses dim light to produce bright LEDs
Researchers at Princeton and North Carolina State University have developed a technique that substantially improves the ability to convert low-energy light into a high-energy version. The method has immediate applications ...
Phys.org / Plasma rings around M dwarf stars offer new clues to planetary habitability
How does a star affect the makeup of its planets? And what does this mean for the habitability of distant worlds? Carnegie's Luke Bouma is exploring a new way to probe this critical question—using naturally occurring space ...
Phys.org / THz spectroscopy system bypasses long-standing tradeoff between spectral and spatial resolution
Terahertz (THz) radiation, which occupies the frequency band between microwaves and infrared light, is essential in many next-generation applications, including high-speed wireless communications, chemical sensing, and advanced ...
Phys.org / Engineers create water-saving sand layer to improve plant resilience during drought
The Anasazi, a once-flourishing tribe in the American Southwest, lived on bounties of corn, squash and beans. In 1276 A.D., however, a long, unforgiving drought made agriculture untenable, forcing them to migrate away from ...
Phys.org / The mechanical ratchet: A new mechanism of cell division
Cell division is an essential process for all life on Earth, yet the exact mechanisms by which cells divide during early embryonic development have remained elusive—particularly for egg-laying species.
Phys.org / Snowflake-like emergence phenomenon discovered in metal nanocrystals
Whether they're tickling your nose, hugging your eyelashes or melting on your tongue, few winter wonders are as fascinating as snowflakes.
Phys.org / Creating psychedelic-like molecules by shining light on life's basic building blocks
UC Davis researchers have developed a new method that uses light to transform amino acids—the building blocks of proteins—into molecules that are similar in structure to psychedelics and mimic their interaction with the ...
Phys.org / Swinging abyss: Oxygen isotope analysis shows less dynamic Antarctic ice sheet in Oligocene period
Oxygen isotopes data enable researchers to look far back into the geologic past and reconstruct the climate of the past. In doing so, they consider several factors such as ocean temperature and ice volume in polar regions. ...
Phys.org / Synchronizing ultrashort X-ray pulses for attosecond precision
Scientists at the Paul Scherrer Institute PSI have, for the first time, demonstrated a technique that synchronizes ultrashort X-ray pulses at the X-ray free-electron laser SwissFEL. This achievement opens new possibilities ...
Phys.org / Lunar spacecraft exhaust could obscure clues to origins of life
Over half of the exhaust methane from lunar spacecraft could end up contaminating areas of the moon that might otherwise yield clues about the origins of Earthly life, according to a recent study. The pollution could unfold ...
Phys.org / New tool narrows the search for ideal metal organic frameworks
Princeton researchers have developed a new tool to speed the discovery of advanced materials known as metal organic frameworks (MOFs).
