It is clear that any definition of a small farm needs to be based on national and regional realities. Definitions involving only the criterion of farm size have universal appeal as they are relatively easy to apply and allow simple comparisons across countries and world regions. However, they don't capture all the complexities of farming. Definitions involving additional criteria to farm size are more meaningful, particularly those including indicators of the farm economic output, but data availability is often a limitation (Ruane, 2016).

The OECD Mission Action Lab critically examines the practice of missions and mission-oriented policies as well as their suitability to different problem contexts. Addressing complex challenges comes first, methods come second. The Lab is, thus, not promoting "missions" as the one and only instrument to address complex problems or societal transitions. Rather, we aim to understand when and how mission as an approach to public policies is useful and, sometimes more importantly, when it is not.

Despite the concept's widespread popularity, the terminology surrounding missions can come across as convoluted. This is understandable, given that the term - which denotes ambitious, time bound, cross-sectoral and measurable policy objectives to address grand societal challenges such as climate change mitigation, biosphere restoration or tackling health inequities - has proven to be both deceptively intricate and remarkably versatile.

Future technologies and systemic innovation are critical for the profound transformation the food system needs. These innovations range from food production, land use and emissions, all the way to improved diets and waste management. Here, we identify these technologies, assess their readiness and propose eight action points that could accelerate the transition towards a more sustainable food system. We argue that the speed of innovation could be significantly increased with the appropriate incentives, regulations and social licence.

The United Nations predicts that we need to increase food production globally by 70 percent to feed 9.6 billion people by 2050. But at the same time, given the climate crisis, we need to significantly reduce the use of energy, water, and land needed to produce food and lower its carbon footprint. In other words, we must figure out how to produce and distribute more food using fewer resources and emissions. We must learn to do farming better with less.

Food security is a critical challenge –  the World Bank includes it among the eight global challenges to be addressed at scale in 2024. Climate shocks, economic instability and geopolitics have significantly impacted crop yields and food supply chains.

India's smallholding farmers face significant challenges. They struggle with erratic weather and the impacts of climate change, pest infestations, and declining yields. Financially constrained, many are trapped by high-interest loans from local lenders. Post-harvest, issues such as crop wastage, logistics, and market access can add their troubles, with up to 40 percent of produce lost. Market fluctuations and the inability to meet quality standards further exacerbate their struggles.

Colombia produces more sugar per month on one hectare of land than any other country. This privilege is due to the productivity of sugar cane grown in the Cauca River valley, where 14 processing plants operate nearly year-round to produce sugar, honey, bioethanol, and electrical energy. The cane is supplied by 2750 growers, owners of 75 percent of the 240 000 hecatres planted, and by the sugar mills themselves (25 percent of the area). The sugar cane chain provides more than 286 000 direct and indirect jobs.