Earth Science — Chart: World Energy Mix

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "World primary energy by source",
  "data": {"values": [
    {"source": "Oil", "percent": 31},
    {"source": "Coal", "percent": 27},
    {"source": "Gas", "percent": 24},
    {"source": "Hydro", "percent": 6},
    {"source": "Nuclear", "percent": 4},
    {"source": "Renewables", "percent": 8}
  ]},
  "mark": "arc",
  "encoding": {
    "theta": {"field": "percent", "type": "quantitative"},
    "color": {"field": "source", "type": "nominal", "title": "Source"}
  }
}