Euro zone business activity stagnates as Draghi bows out

LONDON (Reuters) - Euro zone business activity stagnated in October as demand withered, according to a downbeat survey published on Thursday hours before European Central Bank President Mario Draghi makes his swansong appearance.In September, the ECB cut its deposit rate deeper into negative territory and said it would revive its bond-buying programme indefinitely to cut borrowing costs and stimulate investment and growth in the euro zone.But inflation in the euro zone still languishes at less..