The impacts of climate change are among the environmental challenges facing Iran that helped spark protests in dozens of cities across the Islamic republic. At least 20 people have died in the uprising, driven by the sudden collapse of financial institutions, low wages and mistrust of national leaders. Rising temperatures are seen by some experts as an underlying condition for the economic hardships that led to the unrest. A severe drought, mismanaged water resources and dust storms diminished Iran's economy in recent years, according to experts who study the region. While the protests are largely driven by resistance to the...