Jimmy Smith, Director General of ILRI, outlines the importance of livestock to developing economies and proposes ways to double livestock production through better feeds. Livestock represents five of the six most valuable global commodities and production is increasing faster in developing countries. Livestock plays a key role in livelihoods, nutrition, health and ecosystems. The CGIAR could harness new science on feeds, genetics, and management to boost productivity and sustainability, improving food security and reducing poverty and emissions.