Savanna

Fire-kept grasslands with scattered trees, stage for Earth’s great megafauna migrations.

Core Principles & Analysis

• Regular fire and grazing hold the tree canopy open — suppress them and woodland closes in.
• The Serengeti’s wildebeest migration cycles more than a million animals with the rains.
• Savannas cover about a fifth of land and feed much of humanity’s livestock.

Specifications & Metrics

• COVERAGE: ~20% of Earth’s land