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: 1 hour 45 min ago
Scientists find fire salamanders glow blue-green under UV light from secretions
Under ultraviolet light, adult fire salamanders reveal a captivating blue-green fluorescence generated by their skin secretions, lasting for several hours. This striking luminescence is mainly concentrated in areas rich in glands, especially along their flanks and underside. Researchers propose that this unique trait could serve functions in communication or as a warning signal, enhancing our understanding of the fire salamander's biology.
Have we found first exomoon? Strange object forcing astronomers to rethink what a moon is
Astronomers have found strong evidence for a massive object orbiting a brown dwarf. This object behaves like a moon, circling another body which orbits a star. Researchers are calling it an exosatellite due to its host's unusual nature. This discovery marks a significant step towards confirming the first exomoon. Future observations will determine its definitive classification and implications.
Antarctica holds more than 60% of Earth’s meteorites, but warming could hide thousands in ice
Antarctic meteorites face significant loss due to climate warming. Warming ice causes meteorites to sink and become inaccessible. Researchers estimate thousands are lost annually, with substantial future losses projected. These extraterrestrial samples offer vital insights into our Solar System's history. Urgent action is needed to preserve these unique scientific resources.
Scientists tested two Argentine ant baits; one sent them roaming, other drove them near water
The study from the University of California, Riverside, found that two common ant-bait insecticides can cause very different changes in Argentine ant behaviour before the ants die. Thiamethoxam made affected ants unusually active and sent them roaming outside the nest, while boric acid caused ants to stop foraging and gather inside. The findings show that unusual ant activity after treatment does not necessarily mean the pesticide has failed.
Henrietta Lacks died at 31, but her cells lived on and transformed modern medicine
Henrietta Lacks' cervical cancer cells became immortal, revolutionizing biomedical research and medical advancements. These HeLa cells were vital for developing the polio vaccine and studying various diseases. Her family remained unaware of this scientific breakthrough for decades after her death. The story highlights critical ethical debates concerning patient consent and financial benefits. This legacy continues to shape discussions on scientific progress and human dignity.
New model may improve solar storm forecasts
Scientists developed a computer model to predict solar eruption speeds. This model helps forecast disruptions to satellites and power grids. Researchers studied Coronal Mass Ejections and their magnetic origins. Observations supported the link between magnetic reconnection and eruption acceleration. These findings improve forecasting of solar event impacts on Earth.
Insecticide killed 97.91% of dengue mosquitoes; the tiny fraction that survived worries Delhi scientists
A recent study from the University of Delhi reveals that mosquitoes, particularly Aedes aegypti, may be becoming less susceptible to the widely-used insecticide alpha-cypermethrin. Laboratory results indicate a small reduction in the insecticide's effectiveness, and researchers discovered specific enzymes aiding in its breakdown. These findings underscore the necessity for diverse mosquito management techniques to ensure continued success in pest control efforts.
Black drongos introduced for pest control later threatened Guam’s native birds
In 1935, the introduction of black drongos to Rota aimed to control agricultural pests. This effort led to the birds establishing their populations, eventually spreading to Guam. However, their aggressive behavior towards native bird species has contributed significantly to declines in local avian populations, highlighting the unforeseen consequences of introducing non-native species into ecosystems.
Meet Max Hung Nguyen: The 17-year-old who used NASA data and AI to predict planets
Max Hung Nguyen utilized NASA data alongside the Hypatia Catalogue to conduct an in-depth analysis of stellar composition. By examining a variety of elements beyond just iron, he uncovered that giant planets tend to orbit stars enriched with heavy elements. To further this research, Nguyen developed an AI model dedicated to predicting absent elemental data, significantly enhancing the chances of discovering new planets in future explorations.
Meet Kiefer and Amelia Chow: California siblings copying beavers to restore habitats
Kiefer and Amelia Chow have launched Eco-Engineering In Action, an initiative aimed at mitigating wildfire threats. By creating beaver dam analogues, they replicate natural flood control systems that effectively slow water flow, enhance wetlands, and reduce wildfire risks. Their efforts, driven by youth volunteers, have successfully restored over thirty-five acres of wetland, inspiring the next generation to actively engage in climate solutions.
