Cornell Cooperative Extension of Lewis County provides unbiased research based information to the residents of Lewis County New York. Cornell Cooperative Extension of Lewis County provides unbiased, research based information to the r Cornell Cooperative Extension puts knowledge to work in pursuit of economic vitality, ecological sustainability and social well-being. We bring local experience and research based solutions together, helping New York State families and communities thrive in our rapidly changing world. Vision: Cornell Cooperative Extension is a national leader in creating positive change on behalf of families and communities through rigorously-tested extension programs. We create measurable change by aligning local needs with the resources and priorities of the land grant system and its state and federal partners.