Cary Institute of Ecosystem Studies (Cary Institute), formerly known as the Institute of Ecosystem Studies, is an independent, not-for-profit environmental research organization dedicated to the scientific study of the world's ecosystems and the natural and human factors that influence them. The organization is headquartered in Millbrook, New York, on a 2,000-acre (810 ha) research campus. Areas of expertise include disease ecology,[1][2][3] urban ecology,[4][5] freshwater ecology and provisioning,[6][7] and forest health.[8]