CARIAA - Collaborative Adaptation Research Initiative in Africa and Asia Research to identify what works and what doesn’t in terms of cost-effective and sustainable ways to improve the resilience and capacity to adapt to climate change of the poorest and most vulnerable people and communities in three climate change ‘hot spots’ – semi-arid regions of Africa and Central and South Asia; low-lying heavily populated deltas of Africa and South Asia and; densely populated river basins dependent on snow-pack or glaciers.