IN her introduction to a compelling new study, “The Arab Spring and Climate Change,” released Thursday, the Princeton scholar Anne-Marie Slaughter notes that crime shows often rely on the concept of a “stressor.” A stressor, she explains, is a “sudden change in circumstances or environment that interacts with a complicated psychological profile in a way that leads a previously quiescent person to become violent.” The stressor is never the only explanation for the crime, but it is inevitably an important factor in a complex set of variables that lead to a disaster. “The Arab Spring and Climate Change” doesn’t claim that climate change caused the recent wave of Arab revolutions, but, taken together, the essays make a strong case that the interplay between climate change, food prices (particularly wheat) and politics is a hidden stressor that helped to fuel the revolutions and will continue to make consolidating them into stable democracies much more difficult.

Jointly produced by the Center for American Progress, the Stimson Center and the Center for Climate and Security, this collection of essays opens with the Oxford University geographer Troy Sternberg, who demonstrates how in 2010-11, in tandem with the Arab awakenings, “a once-in-a-century winter drought in China” — combined, at the same time, with record-breaking heat waves or floods in other key wheat-growing countries (Ukraine, Russia, Canada and Australia) — “contributed to global wheat shortages and skyrocketing bread prices” in wheat-importing states, most of which are in the Arab world.

Only a small fraction — 6 percent to 18 percent — of annual global wheat production is traded across borders, explained Sternberg, “so any decrease in world supply contributes to a sharp rise in wheat prices and has a serious economic impact in countries such as Egypt, the largest wheat importer in the world.”