A year of disasters and mismanagement that included mystery air crashes, data hacks, foreign exchange rate rigging and the worst ever Ebola outbreak has torpedoed global trust in public bodies and business, according to a survey. The annual Edelman Trust Barometer, released in Davos, showed a sharp decline in trust across the board with faith in governments, business, media and non-governmental organisations below 50 per cent in two-thirds of countries.