Decades of water depletion, dam building and repression of scientists and environmentalists have driven Iran toward ecological crises that are fueling protests rocking the country.By Katie SurmaThe anti‑government protests sweeping across Iran, from major cities to rural towns, are fueled by anger over economic collapse and political repression. But beneath the headlines of currency devaluations and street clashes lies a deeper, more permanent driver of dissent: ecological calamity.