Record temperatures, prolonged droughts, and the drying up of rivers and lakes are displacing tens of thousands of Iranians each year, experts say. Many of the climate migrants are farmers, laborers, and fishermen who are moving with their families from the countryside to major urban areas in Iran in search of alternative livelihoods. Iranian officials have blamed worsening water scarcity and rising desertification on climate change. But experts say the crisis has been exacerbated by government mismanagement and rapid population growth. While the…