Getting a better read on how climate change threatens agriculture

Climate change expected over the next decade may cause food production in a key agricultural region of Brazil to decline by up to 13 percent, according to research by Avery Cohn, assistant professor of environment and resource policy at the Fletcher School. The decline reflects both reductions in crop yield—how much is produced per area harvested—and how crop failures and farmers' decisions together lead to cultivating less land and growing only one crop in a season instead of two.