Climate change threatens global food security with significant projected crop yield declines
In short: A systematic review of research from 2000 to 2024 found that rising temperatures and erratic rainfall are significantly reducing agricultural productivity worldwide. The study highlights how climate variability disrupts growing seasons, particularly in regions like Ethiopia, South Asia, and Latin America, where smallholder farmers rely heavily on rain-fed agriculture.
The review identifies specific risks for staple crops, such as a projected 10% to 20% decline in Sub-Saharan African yields by 2050. In Ethiopia alone, maize production could drop by 15%, while wheat yields in parts of East Africa have already seen declines of up to 25%.
The findings are based on a systematic review of existing literature rather than new primary data collection. A limitation is that the study relies on historical trends and projections which may vary depending on future emission scenarios.
Why it matters: Climate change poses a severe threat to global food security by reducing the productivity of staple crops in vulnerable regions.
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