From time to time, authorities respond to the pollution with similar measures. Tehran’s air quality is among the worst in the world. The smog is mostly caused by heavy traffic due to millions of ...

The rate at which the planet is warming has sped up since 2010, and now researchers say that China's efforts to clean up air ...

Iran’s president again pledged Wednesday that his nation is “not after a nuclear bomb” ahead of talks between Tehran and the ...

Gone are the days of stop-and-go traffic, choking air pollution, and overcrowded streets ... offer travelers a captivating journey through Tehran’s rich history and culture when most businesses and ...