Pollution
Urban populations have swelled in the past several years. Since 2002, over 5 million former refugees living in Pakistan and Iran have returned home to Afghanistan. Many of these settled in the capital Kabul, which also include migrants that have come from drought-ravaged rural areas.
Read more about this topic: Environment Of Afghanistan
Famous quotes containing the word pollution:
“Like the effects of industrial pollution ... the AIDS crisis is evidence of a world in which nothing important is regional, local, limited; in which everything that can circulate does, and every problem is, or is destined to become, worldwide.”
—Susan Sontag (b. 1933)