CGIAR Tank system

The ancient invention critical to daily life

Paid and presented by CGIAR.

Sri Lanka’s tank cascade system is a feat of engineering that has sustained communities and wildlife for thousands of years. Unpredictable rainfall and droughts are now threatening its ability to provide a consistent supply of clean, safe water. Discover why restoring these ancient systems is important to communities and natural ecosystems.

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Watch the rest of the mini-series

CGIAR Yam farmer

Episode 1

The leaf helping yam farmers stop pests


CGIAR Egypt's fisheries

Episode 3

The future of Egypt's fisheries


CGIAR Dairy farms

Episode 4

The dairy farmers securing milk supply


A commercial
production by
BBC StoryWorks