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A response by Molly E. Brown, Christopher C. Funk and James Verdin to a letter to the editor about the article "FOOD SECURITY UNDER CLIMATE CHANGE" in the February 1, 2008 issue is presented.

The article focuses on the impact of climate change on agricultural and food systems. It is stated that increasing temperatures and declining precipitation over dry regions could potentially reduce yields for corn, wheat, rice, and other primary crops in the next two decades, affecting the global food security. It has been accounted since 1990s that the rising commodity prices and declining per capita cultivated area have led to decreases in food production, eroding food security in many communities. Information about the climatic change' impact on national revenue is included.