Science and Technology

Why hydration mattersWater is essential to every cell, tissue, and organ, playing roles that include regulating temperature, transporting nutrients, eliminating waste, sustaining blood volume and pressure, and enabling biochemical processes. Even minor fluid deficits can influence physical performance, mental clarity, digestion, and overall mood. Since the sensation of thirst often appears after the body already needs fluids, many individuals remain mildly dehydrated without realizing their gradual decline in function.How much fluid do you really need?Guidelines shift according to age, gender, activity level, climate, and individual health. Common benchmarks include:Average daily total water intake (from foods and drinks) generally reaches about…

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, which NASA confirmed on Tuesday, officially closes Williams’ service in the astronaut corps and turns what had been planned as a brief test mission into her final trip to space. Although the agency did not detail the exact moment behind her choice, the retirement concludes a career launched in…

Health anxiety—worrying excessively about having or developing a serious illness—is common at varying degrees. For many people the internet, social media, and symptom-checking apps are primary sources of health information. While accessible information can empower patients, it can also amplify and maintain anxiety. This article explains how and why information often makes health anxiety worse, illustrates with examples and data-based patterns, and offers practical strategies for individuals and clinicians.How are health anxiety and cyberchondria defined?Health anxiety can span from brief, manageable concern to ongoing, overwhelming preoccupation that interferes with daily functioning. When online activity transforms the search for reassurance into…

Apple’s move to adopt Google’s Gemini artificial intelligence represents a major turning point in the way the company intends to bring sophisticated AI capabilities to millions of users around the globe.Instead of delaying progress to finalize its own large-scale model, Apple is emphasizing rapid deployment, dependable performance, and a refined user experience as it readies a long-awaited enhancement 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…

A safer path forward for lithium-ion batteriesGroundbreaking advances in battery chemistry are redefining the balance between safety and performance, and a novel electrolyte formulation devised by researchers in Hong Kong presents a compelling path to reducing fire hazards while keeping existing lithium-ion battery production methods intact.Lithium-ion batteries have become an invisible backbone of modern life. They power smartphones, laptops, electric vehicles, e-bikes, medical devices and countless tools that shape daily routines. Despite their efficiency and reliability, these batteries carry an inherent risk that has become increasingly visible as their use has expanded. Fires linked to lithium-ion batteries, while statistically rare,…

Whole-person health is a practical orientation to care that treats people as integrated beings rather than a collection of isolated symptoms. It blends medical treatment with attention to mental, social, economic, behavioral and environmental drivers of health. In practice, whole-person health shifts systems from episodic, disease-focused encounters toward continuous, personalized partnerships that reduce suffering, improve outcomes and lower avoidable costs.Essential elements of comprehensive whole-person well-beingPhysical health: evidence-based prevention, chronic disease management, function and mobility, and attention to sleep, nutrition and exercise.Mental and behavioral health: routine screening and accessible treatment for depression, anxiety, substance use, trauma and stress-related conditions.Social determinants of…

Artificial intelligence moved from promise to pressure point in 2025, reshaping economies, politics and daily life at a speed few anticipated. What began as a technological acceleration has become a global reckoning about power, productivity and responsibility.How AI transformed the world in 2025 and what the future may bringThe year 2025 will be remembered as the point when artificial intelligence shifted from being viewed as a distant disruptor to becoming an unavoidable force shaping everyday reality, marking a decisive move from experimentation toward broad systemic influence as governments, companies and citizens were compelled to examine not only what AI is…

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…

Astronomers capture new images of interstellar comet 3I/ATLAS approaching EarthNew insights into comet 3I/ATLAS highlight its distinctive composition and active tails as it approaches its nearest point to Earth this month. The interstellar traveler, hailing from outside our solar system, has captivated scientists' attention since it was first identified in July 2025.Comet 3I/ATLAS represents just the third interstellar object identified as it journeys through our solar system, rendering each observation vital for comprehending its path, makeup, and actions. Detailed images of the comet have been captured by both the Hubble Space Telescope and the European Space Agency’s Jupiter Icy Moons…

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…