Three decades of war and severe drought have already damaged the country's environment with widespread desertification and deforestation and loss of vegetation and wildlife, deputy head of Afghanistan's National Environmental Protection Agency said.
But now, overpopulation in Afghanistan's cities, the burning of poor quality fuel, thousands of imported old cars, no proper waste management or sewage system and a boom in construction, have worsened air pollution, Jarullah Mansoori said.
"We are three times more polluted than the other capitals in the region. If everything is left as it is now, after two or three years, we will not be able to live in Kabul, said Mansoori.
"We will have to leave for another place, where we can find clean air, clean water and clean food. This is called environmental migration. When environmental migration takes place then it's a huge social problem," he said.