Results from a new study co-authored by Netra Chhetri, a faculty member at the Consortium for Science, Policy & Outcomes at Arizona State University, show global warming of only 2 degrees Celsius will be detrimental to three essential food crops in temperate and tropical regions. And beginning in the 2030s, yields from those crops will start to decline significantly.

“This study has been able to quantify the likely impacts of differing degrees of climate change on yields, by crop and by region,” Chhetri said. “In general, Sub-Saharan Africa and South Asia showed significant yield reductions for the second half of the century.”

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