The world's agricultural system will have to produce enough food for an estimated 9.6 billion people by 2050 while reducing its environmental impacts, a report from the World Resources Institute, the World Bank, and the United Nations Environment and Development programs argues. The report, Creating a Sustainable Food Future: World Resources Report 2013-2014: Interim Findings (154 pages, PDF), analyzes the challenges associated with closing the so-called "food gap," reducing poverty and food insecurity among smallholder farmers in the developing world, increasing crop yields, reducing greenhouse gas emissions, and improving fishery management. Despite these and other challenges, the report's authors are optimistic that climate-smart agricultural policies designed to create efficiency gains in the use of natural resources — not only land and water but also fertilizer, livestock feed, and fish oil — can help boost food production, protect ecosystems, slow climate change, and increase economic opportunities for hundreds of millions of the rural poor.