Lake Keowee Real Estate News – Lake Keowee homes for sale – Lake Keowee News – Lake Keowee Waterfront property for sale – Lake Keowee Waterfront Real Estate for Rent – Investors seeking safety send yield on 10-year Treasury to historic low – By Francesca Levy – NEW YORK – The problems that weighed down U.S. stocks all summer show no sign of letting up as they plunged Friday, erasing the weeks gains amid rising fears about fallout from Europes debt crisis….