{"version":"1.0","type":"rich","title":"[Project] PM2.5 Around the World","description":"This visualization combines a world choropleth map, a line chart of all countries, and an interactive tool panel to explore PM2.5 air pollution data from 2010 to 2017. Users can hover over countries to see values, click to select a country and highlight its trend in red, and use a slider to change the year displayed. The map uses `geoNaturalEarth1` projection and `geoPath`, while the line charts are drawn with `d3.line` and `curveNatural`. Data is loaded from a CSV via `d3.csv` and processed with `d3.nest` and `d3.range`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bbc505c2d4cb467592bf28d9c9a1e668?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}