International medicine and air pollution.

Environmental pollution worldwide has been increasing rapidly as a result of massive increases in industrial production, especially since 1950. Although the United States has begun to address the problem, many nations have not been able to, such as those formerly part of the Communist bloc and many emerging nations. The International Society of Doctors for the Environment was established to promote the information flow about environmental impacts on health. The National Association of Physicians for the Environment is a member of that organization.