direct to your inboxThis time 20 years ago Manchester Airport had just opened its second runway at a cost of £172m, heralding what was trumpeted as a bright new era for aviation and a jobs bonanza fuelled by no-frills budget airlines.Civic leaders hailed it as an important milestone for a city with ambitions to become an international player.Two miles of concrete carpet unfurled onto rolling Cheshire countryside, it came at a cost that was environmental as well as financial.But it undoubtedly