Climate Change

The world faced a stark inflection point in 2024, as the continued rise in the number of people facing crisis-to-catastrophic levels of acute food insecurity meets sharp reductions in funding for humanitarian assistance. The 2025 Global Report on Food Crises (GRFC), released today, reports that 295.3 million people across 53 countries/territories faced acute food insecurity in 2024. This represents a tripling of the number of people facing acute hunger since 2016 and a doubling since 2020 (Figure 1).

Figure 1

Climate change, malnutrition, and poor diets are interconnected. Without well-financed climate change adaptation plans and strategies global nutrition disparities could worsen.

The problem of food loss and waste (FLW) undermines global food and nutrition security and makes a significant contribution to climate change, primarily through greenhouse gas (GHG) emissions. Reducing or minimizing FLW requires coordinated action to align stakeholders, promote responsible investments, and incentivize sustainable agricultural practices.

The global food system is uniquely vulnerable to climate impacts, making adaptation of paramount importance. While contributing roughly one-third of total anthropogenic emissions, food systems around the world fortunately also hold immense potential for mitigation through improved practices and land use. A new article published today in Science emphasizes the critical role of agrifood value chains (AVCs) in supporting both adaptation and mitigation at the farm level.

Climate change is increasing the frequency of adverse weather events and reducing agricultural productivity, particularly in warmer regions of the world (Ortiz-Bobea et al 2021). Smallholder farming households in developing countries depend on agriculture for their livelihoods and spend a larger proportion of their income on food,  making them the most vulnerable to harvest failures  (Hallegatte et al 2020).