Science and Technology

After nearly three decades of service, NASA astronaut Suni Williams has announced her retirement, marking the end of a career defined by endurance, leadership, and record-setting achievements. Her final mission, an unplanned nine-month stay in orbit during Boeing’s Starliner test flight, has become a defining moment in modern space exploration.The announcement, confirmed by NASA on Tuesday, formally ends Williams’ tenure in the astronaut corps and transforms what was meant to be a short-duration test flight into her final journey to space. While the agency did not specify the precise timing behind her decision, the retirement caps a career that began…

The importance of staying hydratedWater is a key component of every cell, tissue, and organ. It helps regulate body temperature, transport nutrients, remove waste, maintain blood volume and pressure, and support biochemical reactions. Even small shortfalls in fluid balance affect physical performance, cognitive function, digestion, and mood. Because the feeling of thirst can lag behind actual need, many people are chronically underhydrated without noticing gradual declines in function.How much hydration does one truly require?Guidelines shift according to age, gender, activity level, climate, and individual health. Common benchmarks include:Average daily total water intake (foods + beverages): about 3.7 liters for men…

OpenAI intends to roll out advertising inside ChatGPT, delivering tailored promotional content shaped by each user’s interactions. This step represents a notable change in how conversational AI platforms might produce revenue and engage with their audiences.The announcement signals a new phase for ChatGPT, which has grown rapidly as a popular tool for answering questions, assisting with work, and generating content. While OpenAI has historically relied on subscription revenue from services like ChatGPT Plus, the introduction of ads represents a broader strategy to monetize the free-tier experience.How ads will work within ChatGPTAccording to OpenAI, ads will be contextually relevant, meaning the…

Apple’s decision to rely on Google’s Gemini artificial intelligence marks a pivotal shift in how the company plans to deliver advanced AI features to millions of users worldwide. Rather than waiting to perfect its own large-scale model, Apple is prioritizing speed, reliability, and user experience as it prepares a long-anticipated upgrade to Siri.Apple announced that it will bring Google’s Gemini AI model into the upcoming Siri update planned for later this year, with both companies jointly revealing a multi‑year deal enabling Apple to operate Gemini in combination with Google’s cloud systems to power expanded artificial intelligence features. For Apple, the…

Artificial intelligence shifted from a hopeful breakthrough to an urgent global flashpoint in 2025, rapidly transforming economies, politics and everyday life far faster than most expected, turning a burst of tech acceleration into a worldwide debate over power, productivity and accountability.How AI transformed the world in 2025 and what the future may bringThe year 2025 will be remembered as the moment artificial intelligence stopped being perceived as a future disruptor and became an unavoidable present force. While previous years introduced powerful tools and eye-catching breakthroughs, this period marked the transition from experimentation to systemic impact. Governments, businesses and citizens alike…

Robust research indicates that exercise serves as a clinically significant approach to easing depressive symptoms across diverse age groups and environments, although its impact does not manifest uniformly for all individuals or routines; consequently, grasping the appropriate dose encompassing frequency, intensity, duration, and modality, as well as tailoring it to each person, becomes crucial for achieving consistent improvements in mood.What the available evidence revealsMultiple randomized trials and meta-analyses report a small-to-moderate antidepressant effect of exercise. Pooled estimates commonly fall in the standardized mean difference range of about -0.3 to -0.6, indicating clinically relevant symptom reduction for many people.Effects are seen…

Bolivia’s Carreras Pampas reveals unprecedented dinosaur trackwaysOver 16,000 fossilized footprints unearthed in Bolivia present a vivid glimpse into the movements of theropod dinosaurs from over 100 million years ago. These tracks, preserved along an ancient shoreline, offer rare insights into how these predators navigated their environment during the late Cretaceous period.The Carreras Pampas site, situated within Bolivia’s Torotoro National Park, has revealed an extraordinary concentration of theropod footprints, with scientists recently identifying 16,600 impressions. This number exceeds any previously recorded tracksite in terms of sheer volume. The preserved tracks cover approximately 80,570 square feet (7,485 square meters) and include both…

Volcanic eruption may have triggered the Black Death, study suggestsRecent studies suggest that a colossal volcanic eruption during the mid-14th century might have triggered a series of events culminating in the Black Death, one of the most lethal pandemics in human history. By integrating climate data from tree rings, ice cores, and historical documents, researchers are illuminating how environmental and societal elements converged to form an ideal scenario for the plague.Researchers have extensively examined the Black Death, which devastated Europe from 1347 to 1351, resulting in the deaths of at least 25 million individuals—approximately half of the continent's population at…

The scientific revolution of the seventeenth century marked profound progress in understanding the natural world, and among its most significant contributors was Robert Hooke. An English polymath, Hooke’s acute observational skills and innovative experiments transformed biology, most notably through his discovery regarding cells. His meticulous work laid the foundation for future advances in microbiology and cellular biology—a legacy that persists centuries later.Robert Hooke and the Invention of the Compound MicroscopeRobert Hooke was more than just a scientist; he was also an inventor and architect, renowned for improving scientific tools. In the 1660s, he perfected the compound microscope, an instrument featuring…

NASA could be on the verge of a significant overhaul as billionaire Jared Isaacman, President Donald Trump's contentious choice for administrator, presents an ambitious blueprint for the organization.Project Athena: an ambitious roadmapIsaacman, whose nomination to head NASA has been a recurring event, having been put forward, then retracted, and subsequently re-proposed, has released a 62-page report named Project Athena outlining his vision for the agency. Although certain parts are now deemed obsolete, the blueprint indicates extensive transformations, ranging from internal restructuring to bold objectives for deep-space missions. Isaacman has stressed that this document was conceived as an initial framework, designed…