Science A–Z: W· page 18

Tiny structures that manipulate light in surprising ways, opening up new possibilities in science and technology.

Subway systems connect millions of people every day, but how do they work? Explore the underground networks that make modern cities run smoothly.

Explore how subways work, their history, and why they are vital to urban life.

Dive into the world of sound with subwoofers and woofers, and discover how they bring music to life.

Explore the fascinating world of sudden increases and how they happen around us every day.

Suicidal thoughts can feel overwhelming, but understanding them is the first step toward healing. Explore what they are and why they happen.

Sulfonylureas are powerful drugs that help manage diabetes, but what exactly do they do and how do they work?

Discover how angles work together inside different shapes, from triangles to polygons.,

Sun sensors are essential tools that help spacecraft orient themselves by detecting the direction of sunlight. Discover how they make space travel possible.

Sunbeams can look like glowing lines, but why? Explore the science behind this beautiful phenomenon.

Sunburns happen when your skin gets too much UV radiation. But why does it feel so hot and painful afterward?

Discover what makes super helpers special and how they help us understand complex problems more easily.

Explore the fascinating world of super powers, from real-life abilities to fictional heroes.

Discover the world of small colored blocks and their surprising uses across different fields.

Discover what makes super smart robots different from regular robots — and how they might change our future.

Discover the power behind shields that can withstand incredible forces, from ancient myths to modern science.

Discover the world of doctors who go beyond the ordinary, diving deep into every detail of their patients' health.

Super-earths are fascinating exoplanets that might hold the key to finding life beyond Earth. Learn what they are and why they matter.

Discover the magical side of campfires that go beyond just roasting marshmallows.

Discover the fascinating world of thumbs that can feel the smallest vibrations — and why it matters.

Discover the power behind toys that can bend metal, break bricks, or lift heavy weights — all from a child's imagination.

Discover how superbuilding blocks could revolutionize construction and architecture.

Dive into the world of quantum computing by learning about superconducting qubits, the building blocks of some of today's most powerful quantum computers.

Discover how vapors can remain liquid even below their freezing point, creating fascinating natural and scientific phenomena.

Discover how superellipses combine the smoothness of circles with the sharp edges of rectangles, creating a unique geometric form.

Discover the incredible power hidden within superhot rocks and how they shape our planet.

Superhydrophilic surfaces attract water like magnets — here's how they work and why they matter.

Discover how superlenses can see beyond the limits of traditional optics, revealing a hidden world in stunning detail.

Explore the mysterious world of supernatural phenomena and how they appear in everyday life.

Discover how scientists track the explosive lives of stars through supernova surveys, revealing secrets of the universe.

A supersaturated state occurs when a solution holds more dissolved solute than theoretically possible at equilibrium, creating a fragile, energetic condition ready to release energy or precipitate.

Discover why some people become superstars, and what sets them apart from the rest.

Explore the world of dietary supplements, from basic vitamins to complex nootropics, and learn how they fit into a balanced lifestyle.

Discover what happens when the amount of goods available starts to shrink, and how it affects everyday life.

Supply-side rigidities are barriers that make it hard for businesses to grow or change. Discover how they affect the economy.

Understanding how support for regional proxies works can help explain political dynamics and strategic decisions across regions.

Support levels are like invisible floors in trading. Discover how they help traders make decisions.

Support networks are groups of people who help each other through life's challenges. Discover how they make a difference.

Discover how tiny flaws on surfaces affect everything from everyday objects to cutting-edge technology.

Surface processes are the forces that continuously reshape our planet's landscape, from mountains to valleys.

Surface waves are the ripples you see on water, but they also shake the ground during earthquakes. Lets dive into their fascinating world.,

Surfactants are everywhere — from your morning coffee to the bubbles in your bath. Discover how they work and why they matter.

Discover the world of surgeons — from their training to their everyday work inside hospitals.

Discover the hidden power of surprise circuits, from simple devices to complex systems.

Explore the hidden ways governments and organizations track our movements and behaviors.

Explore the tools and methods surveyors use to measure land, build structures, and understand our environment.

Discover the art and skill behind sushi chefs, from preparing fresh fish to crafting delicate rolls.

Suspension bridges are among the most elegant structures in engineering. Discover how they work and why they're used for big crossings.

Sustainable space programs ensure that our journey into the cosmos can continue for generations without depleting Earth’s resources.

Discover how couples can reduce their environmental impact while celebrating love.

Discover how sustained support mechanisms help systems stay stable over time, from everyday life to complex processes.

Swap rates are the foundation of many financial deals, but what do they really mean? Find out how they work in everyday life.

Swaps are financial tools used to exchange cash flows, helping people manage risk in the world of money and investments.

Sweat glands are the tiny but powerful structures that help your body stay cool. Discover how they work and why they matter.

Explore the world of sweet, fizzy beverages that taste like soda but have their own unique twists.

Swing states can decide the outcome of an election. But what exactly are they, and why do politicians focus so much on them?

Discover the mesmerizing world behind swirling ribbons — from the sky to the sea, these patterns shape our everyday experiences.

Symbols are more than just signs — they carry deep meaning across cultures and time. Let's explore how symbols shape our understanding of the world.

Explore how symbolic systems help us make sense of the world through signs, symbols, and shared meanings.

Sympathetic ganglia are key players in the body's stress response, but what exactly do they do? Find out here.

Explore the neural routes that trigger your fight-or-flight response, connecting the brain to vital organs during stress.

Symptoms are clues your body gives you when something is wrong. Learn how they help doctors diagnose diseases.

Discover how neurons talk to each other through tiny bridges called synaptic connections.

Discover how systems communicate through notifications — some happen instantly, others wait for their turn.

Synergists help muscles work better — but what exactly are they, and why do they matter?

Discover what synthetic reeds are, how they differ from natural ones, and why they matter to musicians and instrument makers.

Explore how governments use checks and balances to prevent any one group from becoming too powerful.

System vulnerabilities are hidden weaknesses that can be exploited by hackers. Understanding them helps keep your data safe.

Discover what systematic errors are and how they can affect measurements in science and everyday life.

Discover how systematic procedures bring order to chaos, from everyday tasks to scientific research.

Discover how rules and conventions shape our understanding of the world, from everyday habits to complex systems.

Systemic advantages shape the world we live in, but what are they exactly? Discover how systems create lasting benefits for some and challenges for others.

Discover how small problems can lead to huge collapses, from economies to ecosystems.

Systems of differential equations model how multiple changing quantities interact, from predator populations to electrical circuits.

Tactical decisions shape the outcome of battles, businesses, and even everyday life. Discover what they are and how they work.

Discover how tagged unions let data be multiple things at once, making code more flexible and powerful.

Tailors shape our clothing, but what exactly do they do? Explore the world of tailoring and how it has evolved over time.

Discover the science behind taking breaks and how they can improve your productivity and well-being.

Discover how melatonin supplements help you sleep better, from their natural origins to their use in modern medicine.

Tangles are more than just knots — they're complex structures found in nature, math, and even your hair. Dive into the world of tangles and discover how they work.

Discover how target molecules play a crucial role in drug development and biological processes.

Targeted interventions focus on specific groups or needs to create more effective solutions. Discover how they work at different levels of understanding.

Tasks are more than just things to do — they're essential tools that help us organize our time, energy, and goals. Discover how tasks shape everything from daily routines to major projects.

Discover how taste receptors help you experience the world of flavors around you, from sweet to bitter.

Discover how taste signals help us experience flavors and why they matter in our daily lives.

Discover the world of tasters, from casual food lovers to professional judges who shape how we experience flavor.

Tau tangles are a key player in brain diseases like Alzheimer's. Discover how they form and why they're so dangerous.

Discover how tax advantages can save you money and change your financial future, from simple savings to complex strategies.

Explore the history, roles, and significance of tax collectors across different eras, from biblical times to modern bureaucracies.

Tax deferral rules let you delay paying taxes on certain income, potentially saving money over time. But how exactly do they function in practice?

Discover what tax havens are, how they work, and why so many people use them to save money.

Tax incentives are tools used by governments to encourage certain behaviors, like investing or hiring. Here's how they work and why they're important.

Discover how tax reliefs can save you money and simplify your finances. Learn the basics in just a few minutes.

Discover the basics of taxation and how it affects individuals, businesses, and governments.

Discover the basics of taxation systems and how they shape economies and daily life.

Discover how people learn from each other across borders through teaching and training exchanges.

Discover how technical improvements shape the world around us, from everyday tools to groundbreaking innovations.

Discover how big changes in technology shape our world, from ancient tools to modern computers.

Discover how technological tools help us solve problems, create new possibilities, and transform everyday life.

Explore how technology studies examine the relationship between people and technology, shaping our modern world.

Tectonic forces shape our planet, from mountain ranges to earthquakes. Explore how these hidden powers work.

Tectonic plates are massive slabs of rock that shape our planet. Learn how they move and cause earthquakes, mountains, and volcanic eruptions.

Discover what makes the teen years unique, from emotional changes to social shifts.

Discover how telecommunication systems enable communication across distances, from ancient messages to modern internet connections.

Telecommunications is the art of sending messages across distances — from ancient signals to modern smartphones.

Teleoperated robots are controlled from afar — but what makes them special, and how do they change the way we interact with machines?

From simple voice calls to smart devices, telephones have evolved over time. Discover how this invention made communication faster and more accessible.

Discover how telephoto lenses bring distant objects closer, making them appear larger in your photos.

Discover how temperate and humid climates shape life on Earth, from the plants we grow to the weather patterns we experience daily.

Discover the characteristics that define temperate rainforests and how they differ from other forest types.

Discover what sets temperate zones apart from other climate regions around the world.

Discover how temperature differences shape our world, from weather patterns to life on Earth.

Temperature inversions can make cold weather feel even more intense. Discover what happens when warm air traps in cold air below.

Explore how things change over time — from the ticking of a clock to the movement of stars.

Discover the magic of temporary magnets—why they stick, why they let go, and how they're used in everyday life.

Explore the strange world of higher dimensions, where time and space take on new forms.

Tension forces are invisible but powerful — they hold bridges, ropes, and even your favorite clothes together. Learn how they work at every level.

Tenures are more than just jobs — they're systems that shape power, influence, and stability across centuries.

Terms are the basic units of language, used to convey meaning in both everyday conversation and complex ideas.

Discover the world of terpenes, the natural compounds that give plants their unique scents and flavors.

Discover the unique features that define terrestrial planets, like Earth.

Explore how invisible lines become real barriers, dictating resource control, political sovereignty, and daily life.

Territorial clashes happen when groups or countries fight over land. These conflicts can change the course of history.

Territories shape the world we live in, from ancient empires to modern maps. Discover what they really are.

Textbooks are more than just books — they're tools that shape how we learn. Explore their role in education across different levels.

Discover how textural layers shape everything from paintings to soil, adding depth and complexity to the world around us.

Discover how texture synthesis algorithms recreate the look of natural or artificial patterns with just a small sample. From art to science, these techniques are used everywhere.

Discover how thalamocortical pathways act as highways for signals between the thalamus and cortex, influencing perception, memory, and more.

Discover the names of the most common 3D shapes, from cubes to spheres.

Discover how the adrenal glands work and why they are essential for your body's balance.

Explore how Paula Rego uses ambiguity to tell complex, emotional stories through her art.

Discover how our minds hide truths from us and why these invisible gaps shape our decisions every day.

A look at the first governing document of the United States and how it shaped early American history.

Explore how engineering uses math, science, and creativity to solve real-world problems.

Explore the fundamental components that make up everything from atoms to universes.

From atoms to molecules, discover how the smallest parts make up the world around us.

From ancient empires to modern innovations, funding grand aspirations is no easy task.

Discover the hidden effects of not getting enough rest, from everyday struggles to long-term health issues.

Explore the groundbreaking contributions of Atul Gawande, a modern leader in medicine and public health.

Explore the groundbreaking work of Jianjun Jin and how it has shaped modern science.

Explore how the Islamic Golden Age shaped science, mathematics, and philosophy across the world.

Discover how Timnit Gebru is reshaping the field of artificial intelligence through her impactful research and advocacy.

A US-Iran ceasefire could bring peace — but it might also hide deeper problems. What are the hidden dangers?

Pursuing extended life through biohacking can offer incredible benefits—but it also comes with unexpected dangers.

Degrees of freedom are essential for understanding statistical analysis, but what exactly do they mean? Explore this concept across different learning levels.

Fitness isn't just about hitting the gym — it comes in many forms. Discover the different types of fitness and how they can benefit your health.

Explore the difference between what we know we don't know, and what we don't know we don't know, and how this shapes our understanding of the world.

Explore how war affects economies, from ancient battles to modern conflicts.

From biased decisions to job loss, AI raises questions about fairness and responsibility. Explore the moral challenges of intelligent machines.

Discover how the earth moves through four main fault types, from small tremors to powerful earthquakes.

Discover why even the most advanced AI systems can't keep getting better forever.

Discover who the Greek gods were, their roles in mythology, and how they shaped ancient life.

Discover the secret organization behind the periodic table and how groups shape the behavior of elements.

Discover how different systems in the human body work together to keep us alive and healthy.

Discover what makes some sweeteners better than others, and how they affect your health and taste.

A mysterious event from ancient Rome, the Ides of March is famous for its dramatic consequences. Discover what it really means.

Imagine a world where energy is abundant, clean, and nearly free — what would that look like?,

Nurses taking on new responsibilities can change how care is delivered — but what does this mean for patients and doctors?

Discover how security protocols protect our data, identities, and online activities every day.

Discover how everyday objects connect to the internet, creating smart homes, cities, and more.

Fusion energy research is making astonishing progress, offering hope for a clean, limitless power source. Discover what's driving these breakthroughs.

Discover the latest breakthroughs that could bring us closer to limitless energy from fusion.

Recent advances in fusion energy research could bring us closer to limitless, clean power.

Discover how motion works through three fundamental laws that shape our everyday lives.

Discover the legal battles surrounding fossil fuel exports and how they impact global energy policies.

Quarantine isn't just about staying home — it can change how people think, feel, and behave over time.

The federal budget is more than just numbers—it's a reflection of national priorities. What are the main concerns that shape it?

Discover how money helps us trade, save, and measure value in our daily lives.

Discover how substances are pulled out from mixtures using different methods, used in everything from labs to everyday life.

From clouds of gas to shining stars, discover the hidden processes that bring stars to life in our universe.

A C-section is a common type of birth, but why do doctors sometimes choose it over a vaginal delivery? Let's explore the most frequent reasons.

Discover how elements can be faked, and what this means for science and technology.

A journey into the fear and frenzy that led to the persecution of witches throughout history.

Discover the most common ways diseases move from one person to another, whether through touch, air, or even food.

Explore the key ideas behind creating clear, attractive maps that help people understand spatial relationships.

Learn about the latest proposed changes to NDIS and health subsidies, and how they might affect you.

Discover how the disappearance of giant creatures like mammoths reshaped our planet and influenced human history.

Discover how contestation works — from everyday disputes to formal debates.

Feng Zhang has made groundbreaking contributions that have changed the way we edit DNA. Discover what he's known for.

Discover how wine transforms into spirit, revealing the magic behind distillation and flavor.

Discover the most common ways we measure things in science, math, and everyday life.

Explore how different systems and components are built and what roles they play in their environments.,

Opioid withdrawal can be intense, but knowing the common symptoms helps you prepare for what's to come.

Explore how synapses lose their strength and what happens when communication between brain cells becomes less efficient.

Discover how rules form the foundation of societies, laws, games, and even nature.

Discover how much the Earth's temperature has increased over time and what it means for our planet.

From everyday vehicles to spacecraft, propulsion is what gets things moving. Discover how different types of propulsion work in various contexts.

Explore the foundation of universal human rights through the lens of Benedetta Berti, and discover how these principles affect our daily lives.