GREENVILLE, S.C. — Greenville continues to make best-of lists of various kinds, and now it is included in Conde Nast Travelers’ top five places in the U.S. to retire. Lake Keowee is a mere 35 miles from this great city and host a myriad of lake side communities that are an awesome target for retirement, with low cost real-estate, low taxes, super climate and the advantage of close proximity to a top ranked University. Clemson is the catalyst for high quality sports, dining, lifelong learning potential and cultural events.     Mark Ellwood, of Conde Nast Traveler, joined Craig Ferguson...