News of the WeekAgriculture

Study Shows Richer Harvests Owe Much to Climate

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Science  14 Feb 2003:
Vol. 299, Issue 5609, pp. 997
DOI: 10.1126/science.299.5609.997

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A new study reported on page 1032 shows that a surprisingly high percentage of the improvement in crop yields seen over the last 2 decades in the United States was due not to farm management but to climate change. The finding suggests that food production in the United States may be more vulnerable to shifts in climate than was previously suspected, a fact that could affect global food security.