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 38 min ago
Scientists are introducing two truffle-eating marsupials to rebuild this Australian island destroyed by feral cats
In a groundbreaking conservation initiative, two endangered marsupial species are set to be reintroduced to Shark Bay. Recent research emphasizes the crucial role of fungal food sources in this process. Utilizing DNA analysis, scientists identified suitable fungi for the boodies and woylies, which are vital for spreading spores during their foraging activities. Their return will revitalize essential ecological dynamics that have been missing from Dirk Hartog Island for many years.
Astronomers warn millions of satellites could permanently brighten Earth's night sky
Ambitious satellite plans may significantly brighten Earth's night sky for all observers. European Southern Observatory researchers warn of potential impacts on astronomical studies. Millions of proposed satellites could collectively increase diffuse sky brightness, obscuring faint objects. Scientists suggest a balance is needed between satellite benefits and research impacts. Decisions made now will shape the future of astronomy for many years.
AI can become more biased than humans while choosing who gets hired; study finds
Artificial intelligence systems are increasingly used for hiring and recruitment tasks. New research shows these AI models can develop their own biases. This occurs as they learn from limited data and repeated hiring decisions. These AI systems create new stereotypes, not just inheriting them from training data. Fairness in AI hiring depends on system design and optimization strategies.
Scientists are planning to install an 80km underwater curtain to stop an Antarctic glavier from melting, here's why
In an exciting scientific endeavor, researchers are exploring the idea of constructing a massive underwater curtain to defend Thwaites Glacier against warm ocean currents. This strategic barrier is intended to redirect these warmer waters, aiming to curb the glacier's swift melting. A recent expedition gathered vital information from the Amundsen Sea to determine the project's feasibility, while additional studies in Svalbard focus on understanding the environmental ramifications of the barrier.
Alaska's crystal-clear rivers are turning vivid orange: Metal pollution is creating 'rusting' waterways, threatening wildlife, habitats and drinking water
Alaska's northern rivers are rapidly turning a vivid orange colour. Increased metal levels make the water toxic, harming fish and insects. Rural communities face risks to drinking water and food security. Scientists are mapping the spread and studying adaptation strategies for these changes.
Rising sea levels are making coastal flooding more common around the world; study finds
Coastal flooding is becoming more frequent globally due to rising sea levels. Extreme sea-level events now occur four times more often than a century ago. Human-caused warming has amplified the impact of tides and storms. Natural variations still influence local flood risk across coastlines. Communities must rethink flood planning based on these changing probabilities.
AI cracks a mystery from 1939 that mathematicians couldn’t solve for decades; the answer was hidden in 216 characters
An artificial intelligence model has aided in identifying a potential solution to an 87-year-old mathematical problem. This development challenges the long-held view of mathematics as a solely human endeavor. Researchers are now exploring AI's potential as a partner in advanced mathematical research. The Jacobian conjecture, proposed in 1939, has resisted decades of human effort. While formal verification is pending, AI's role in creative mathematics is growing.
Why scientists kill 9 million sea lampreys every year in the Great Lakes of America
Invasive sea lampreys, or vampire fish, pose a serious threat to the native fish communities of the Great Lakes. These destructive predators made their way in through canals and now voraciously consume vast amounts of fish annually. Since 1957, the application of TFM has been a cornerstone in eradicating lamprey larvae. However, interruptions in management efforts have caused significant rebounds in lamprey numbers.
Scientists studying bee brains found how colonies coordinate without a central controller
Honeybee colonies organise work without any leader assigning tasks, but scientists have now discovered that specific brain circuits help control this process. By changing the activity of a gene-linked neural circuit, researchers made older worker bees return to caring for the queen, a job usually done only by younger bees. The findings offer new insight into how bees coordinate complex social behaviour.
What does it really take to become an astronaut for NASA and who can apply for it?
The selection process for astronauts at NASA is rigorous and far more demanding than academic qualifications alone. Candidates undergo psychological testing and participate in team-based simulations that are designed to push them to their limits. Psychologists purposefully create high-pressure situations to gauge how well candidates maintain composure and teamwork. This comprehensive method ensures that only the most adaptable individuals are chosen for space missions.
Quote of the day by Nikola Tesla: "I don't care that they stole my idea . . I care that they…" - a powerful lesson on originality, innovation and why true creators never stop thinking
A widely circulated quote attributed to Nikola Tesla emphasizes original thought. This quote highlights the importance of generating new ideas over copying existing ones. Genuine innovation involves a difficult creative process, not just the final product. Tesla's life experiences align with this philosophy, despite the quote's uncertain origin. The enduring message stresses the irreplaceable capacity for continuous creation.
Quote of the day by Michael Faraday: "Lectures which really teach will never be popular; lectures which are popular will…" - a thought-provoking lesson on learning, education and why true knowledge often demands effort
Michael Faraday noted that truly educational lectures are rarely popular. He experienced this tension firsthand as a celebrated lecturer himself. Popularity and deep understanding are measured on entirely different scales. Genuine learning often involves discomfort, confusion, and repeated questions. Modern platforms often prioritize speed over the depth of lasting knowledge.
People are using AI to 'talk' to dead family members, and scientists are now studying its shocking emotional impact
With the advent of AI chatbots, people can now interact with digital renditions of those they've lost. These 'griefbots' serve to bring emotional healing and a sense of resolution to many, fulfilling critical emotional and social needs during the grieving process. Yet, their imperfections raise questions about overreliance on these interactions, as well as the broader ethical ramifications of employing such technology in human relationships.
