Environmental issues in Afghanistan predate the political turmoil of the past few decades. Forests have been depleted by centuries of grazing and farming, practices which have only increased with modern population growth. In Afghanistan, environmental conservation and economic concerns are not at odds; with over 44% of the population dependent on herding or farming, the welfare of the environment is critical to the economic welfare of the people. In 2007, the World Health Organization released a report ranking Afghanistan as the lowest among non-African nations in deaths from environmental hazards.