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Interactive Explainers
Explore 32 interactive science explainers
Open one-page explainers with custom visuals, live controls, original comparisons, and fast follow-up answers. These pages are built to stand on their own in search and to keep curious readers moving deeper into the site.
Light and Color
Why is the sky blue?
A live sky simulator, a clear explanation of Rayleigh scattering, and a comparison with the Moon and Mars.
Oceans and Water
Why is the ocean blue?
A live ocean lab that shows how depth, plankton, sediment, and surface glare shift water from cobalt blue to turquoise, green, or brown.
Space and Weather
Why do we have seasons?
A season lab that lets you change Earth’s tilt, latitude, and orbital position to see how sunlight and daylight shift.
Oceans and Water
What causes tides?
A tide lab that lets you combine lunar pull, solar alignment, and coastline shape to see why some places have tiny tides and others have huge ones.
Oceans and Water
Why is the ocean salty?
A salinity lab that lets you mix river minerals, evaporation, fresh water, and seafloor chemistry to see how salt levels change.
Plants and Life
Why do leaves change color?
A fall-color lab that lets you change day length, cool nights, sunny afternoons, and stress to watch pigments take over a leaf canopy.
Space and Weather
Why is the Moon visible during the day?
A daylight-Moon lab that lets you change phase, altitude, haze, and separation from the Sun to see when the Moon stands out.
Light and Color
How do rainbows form?
A rainbow lab that lets you move the Sun, change the spray, and darken the storm background to see when an arc strengthens or disappears.
Light and Color
Why do stars twinkle?
A twinkle lab that lets you change turbulence, altitude, humidity, and apparent size to compare stars with steadier-looking planets.
Earth and Geology
What causes earthquakes?
A fault-slip lab that lets you build stress, change friction, and move farther from the rupture to see how shaking changes.
Earth and Geology
Why do volcanoes erupt?
A volcano lab that lets you change gas content, magma stickiness, and vent blockage to compare lava flows with explosive ash-rich eruptions.
Plants and Life
How does photosynthesis work?
A photosynthesis lab that lets you change sunlight, carbon dioxide, water, and leaf temperature to see what limits sugar production.
Space and Weather
How do auroras form?
An aurora lab that lets you vary solar wind, magnetic guidance, darkness, and latitude to see when a faint glow turns into bright moving curtains.
Storms and Atmosphere
What causes lightning?
A lightning lab that lets you combine updrafts, moisture, ice collisions, and ground connection to see when a storm charges up and finally discharges.
Storms and Atmosphere
How do hurricanes form?
A hurricane lab that lets you tune ocean heat, moisture, spin, and wind shear to see when a tropical cluster stays messy or becomes a powerful storm.
Storms and Atmosphere
What causes tornadoes?
A tornado lab that lets you change instability, wind shear, storm rotation, and moisture to see when a supercell begins focusing spin toward the ground.
Space and Weather
What is a black hole?
A black-hole lab that lets you vary mass, distance, spin, and surrounding gas to compare gravity, time slowdown, tidal stress, and visibility.
Light and Color
Why do mirages happen?
A mirage lab that lets you vary ground heating, viewing distance, air layering, and surface brightness to see when a false pool of water or lifted image appears.
Physics and Matter
Why do magnets attract?
A magnet lab that lets you vary field strength, distance, material response, and pole setup to compare strong pull, weak response, and outright repulsion.
Oceans and Water
Why does ice float?
An ice-buoyancy lab that lets you vary temperature, salinity, pressure, and lattice openness to compare lake ice, sea ice, slush, and dense high-pressure ice.
Physics and Matter
What causes a sonic boom?
A sonic-boom lab that lets you push speed past Mach 1, change altitude, thicken the air, and sharpen maneuvers to compare shock strength and ground impact.
Light and Color
Why do mirrors reverse left and right?
A mirror-perception lab that lets you vary body rotation, mirror angle, asymmetry cues, and text clues to see when the reflection feels intuitive and when it feels backwards.
Space and Weather
How does a solar eclipse work?
An eclipse lab that lets you tune the alignment, the Moon's apparent size, and your position in the shadow path to see when the sky really goes dark.
Storms and Atmosphere
What causes fog?
A fog lab that lets you change humidity, cooling, wind, and airborne particles to see when clear air crosses the line into a low cloud.
Storms and Atmosphere
What is the greenhouse effect?
A climate-balance lab that lets you tune sunlight, greenhouse gases, cloud cover, and reflectivity to see how much heat the surface keeps versus sends back to space.
Physics and Matter
How do airplanes fly?
A flight lab that lets you change airspeed, wing angle, air density, and wing shape to see when lift beats drag and when the wing runs out of margin.
Physics and Matter
Why does metal rust?
A corrosion lab that lets you change moisture, oxygen, salt, and coating damage to see when iron stays stable and when it begins to crumble into rust.
Physics and Matter
Why do bubbles form spheres?
A bubble lab that lets you adjust soap mix, inflation, airflow, and crowding to see when a bubble stays round and when foam geometry takes over.
Earth and Geology
How do crystals form?
A crystal-growth lab that lets you tune concentration, cooling, room to grow, and impurities to see when crystals stay tiny and when they become large and well formed.
Light and Color
Why is snow white?
A snow optics lab that lets you change grain freshness, packing, meltwater, and soot to see when snow glows bright white and when it turns gray or dingy.
Plants and Life
Why does bread rise?
A bread lab that lets you tune yeast activity, warmth, hydration, and gluten strength to see when gas gets trapped and when the dough spreads instead of rising.
Physics and Matter
How does a compass work?
A compass lab that lets you tune field strength, interference, latitude, and needle friction to see when the needle locks on and when it starts lying to you.
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