Science Alert
Catch up on the latest science news, from space and technology to life and environmental research- all the discoveries shaping our world today.
Updated: 18 min 17 sec ago
Why reindeer eyes turn deep blue in winter and how it helps them see in Arctic twilight
Reindeer experience a seasonal change in eye color that enhances their ability to see in dim Arctic light. This adaptation involves a shift in the tapetum lucidum from gold-turquoise in summer to deep blue in winter. The deep blue reflection helps reindeer forage and detect predators in low-light conditions. Changes in collagen fibril spacing within the eye's reflector contribute to this transformation.
Roman-era pyramid tomb found in Egypt’s Dakhla Oasis, dating back 1,700 years
A rare pyramid-shaped tomb has been uncovered at Bir Al-Shaghala in Egypt's Dakhla Oasis and dates back to the Roman period. The tomb, built from mud brick, combines Egyptian and Roman architectural styles and includes inscriptions. Among the findings is a Greek funerary poem dedicated to a man named Psychtis, indicating cultural exchanges. Archaeologists also discovered artifacts related to funerary rituals, including an offering table and a bronze coin.
Mississippi River islands near Iowa are disappearing; $40M project to restore 630 acres of habitat
Efforts are underway to rejuvenate islands and bolster habitats along Iowa's Mississippi River. Utilizing dredged materials from navigation upkeep, new islands are emerging to safeguard shorelines. Construction commenced in 2025, with phases extending through 2030. This initiative, part of a larger U.S. Army Corps program, aims to enrich the river's ecosystem, fostering diverse fish and wildlife habitats.
Burmese python DNA was detected in water five minutes after exposure in Florida
Researchers at the University of Florida have pioneered a groundbreaking tetraplex digital PCR assay aimed at the rapid detection of invasive snakes within the state. This innovative method effectively identifies key species such as Burmese pythons, northern African pythons, boa constrictors, and rainbow boas. Remarkably, DNA from the Burmese python can be identified in water shortly after contact with the snake, marking a notable enhancement over previous detection techniques.
Floating solar cuts seabed light in French Polynesia, with no detectable lagoon temperature
Floating photovoltaic platforms in a French Polynesian lagoon created substantial reductions in light reaching the seabed, which was studied for one year. Researchers monitored the environmental impact of four platforms and a control area during the study. They observed strong attenuation in ultraviolet radiation under the platforms, affecting diverse wavelengths. However, changes in water temperature remained statistically insignificant and below sensor accuracy levels.
