GoKawiilStudy finds world's protected-area coverage higher than official figures show
Researchers built a sampling method covering 10% of the world's land area, selecting sites based on ten factors including biomes, elevation, government effectiveness, income levels and population density, broken into 89 distinct features. Using the Marxan conservation-planning software, they identified a representative sample of countries and territories to measure how much land is actually under conservation protection, building on an earlier study's methodology.