ENVIRONMENTAL EDUCATION The Iroquois Environmental Newsletter (IEN) is a bi-annual newsletter published in the Spring and Fall of each year. Funded by the United States Environment Protection Act (USEPA), under the General Assistance Program (GAP), the mission of the IEN is to inform, educate, and to network with other Iroquois Nation People regarding environmental issues in our territories. Tribal Environmental Health Education Activities 2 Program (TEHEA2) is a five year cooperative agreement funded by the ATSDR designed to increase the awareness and knowledge of environmental contaminants like PCBs, dioxin, lead and mercury and their adverse effects on human health.