01 / The world before
Farming could deplete soils without understanding their chemistry and biology.
02 / The discovery
Soil testing and research revealed nutrients, structure and living organisms.
03 / The people
Soil scientists, farmers and extension workers.
04 / The obstacles
Soil health changes slowly and conditions vary.
05 / The world after
Better information supports more careful management.
06 / Why it still matters
Food systems depend on conserving productive soil.