An interactive web app visualizing global population trends from 1950 to 2100. Featuring a 3D particle globe and dynamic map, the platform allows users to explore critical milestones and shifting dynamics across world regions and income groups, driven by data from the UN World Population Prospects. Check out the project: yuinchien.com/population.

3D Particle Globe transforms abstract demographic datasets into a living, interactive visual system. Representing 500,000 people per dot, the globe allows users to color-code the particle cloud by region or income group—providing a macro lens on global growth and highlighting the stark contrasts in population density across different eras.

Paritcle Map View smoothly transitions the WebGL particle system from a 3D sphere into a planar geographic map, watching tens of thousands of 500,000-person dots reshuffle into their exact coordinate positions.

Peak Population By adjusting the timeline slider, users can instantly identify which countries crest their population ceilings in a given year.

Detail View breaks down macro trends into granular country-level metrics. Selecting a region or income group opens a dedicated panel listing individual nations alongside their population size, annual growth rate, and fertility levels.

Population Milestones highlights critical demographic inflection points along the timeline. The timeline ticks are custom color-coded to flag significant projected years, inviting users to jump directly to tectonic global shifts—such as “The Great Age Inversion” in 2063 or the arrival of “A Super-Aged Planet” by 2070.