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Glacier Calving DynamicsNewInteractive tidewater glacier simulation — crevasse depth via the Nye criterion, calving… Ice-Albedo Feedback LoopNewInteractive ice-albedo feedback simulation — watch melting ice lower Earth's albedo, absorb… Iceberg Drift & MeltNewInteractive iceberg drift and melt simulation — Archimedes flotation, ocean current vs wind… Permafrost Thaw & Methane ReleaseNewSimulate permafrost thaw — active-layer deepening via the Stefan equation, methane bubble… Sea Level Rise SimulationNewWatch coastal flooding unfold as sea level rises — adjust the emissions scenario and target… Freezing Point Depression & Boiling Point ElevationNewDissolve a solute and watch both the freezing point drop and boiling point rise by the same… Koch SnowflakeNewBuild the Koch snowflake by recursively replacing the middle third of every segment with an… Dendrite Growth — Snowflakes & SolidificationNewAs a melt solidifies, its flat interface goes unstable and branches into dendrites, with… Arctic Ice SimulationNewModel the seasonal growth and retreat of Arctic sea ice under changing climate conditions. DendrochronologyNewRead tree rings as a climate archive — how annual growth bands record droughts, frosts and… Ice Core RecordNewExplore how Antarctic and Greenland ice cores preserve 800,000 years of climate history in… Permafrost ThawNewSet annual and summer air temperatures, thermal conductivity and latent heat, then animate a… Climate Tipping Points — Cascade & HysteresisNewNudge global temperature up and watch Arctic ice, the Amazon and the AMOC flip past… Snow GlobeNewA glass snow globe — shake it and watch the snow swirl and settle over a tiny winter scene. Differential GearNewAn automotive differential lets driven wheels turn at different speeds… Snow AvalancheNewA slab avalanche fires when stability = strength/stress drops below 1, a fracture races… Ice Halos & Sun DogsNewMonte-Carlo atmospheric optics: refract sunlight through hexagonal ice crystals and watch… L-System FractalsGenerate fractal plants, trees and curves with Lindenmayer grammar rewriting and turtle… Glacier DynamicsAdjust snowfall, temperature and bed slope to see ice flow under Glen's law, watch the… Turtle Graphics & L-Systems — Interactive Fractal Art SimulatorType turtle-graphics rewrite rules and watch L-Systems draw Dragon Curve, Koch Snowflake,… Polar Ice DynamicsSea-ice growth and melt couples to surface albedo feedback — set seasonal insolation and CO₂… Why Ice Floats — Water Density AnomalyMolecular simulation of water showing the hexagonal hydrogen-bond lattice in ice, density… Carbon Cycle4-box carbon cycle: atmosphere ↔ biosphere ↔ ocean surface ↔ deep ocean. Ocean uptake ∝… Earth Energy BalanceZero-dimensional EBM: C·dT/dt = (1−α)·S₀/4 − σεT⁴ + CO₂ forcing. Ice-albedo feedback shifts… Fracture SimulationVoronoi fracture of glass, concrete, ice, ceramic, metal and wood. Click to shatter at… ❄️ SnowflakesWatch unique snowflakes fall from the sky! Every snowflake is different — just like you. Atmospheric Optics — Rainbows & HalosGeometric optics in water droplets and ice crystals producing rainbows and 22°/46° halos. Atmospheric OpticsFour scenes: Rayleigh sky scattering with sunset colours, rainbow arc physics, 22°… Snow Crystal Growth SimulationSimulate dendritic snow crystal (snowflake) growth using a diffusion-limited aggregation… Snow Crystal — DLA GrowthWatch a snowflake grow atom by atom using Diffusion-Limited Aggregation on a hexagonal grid…