A sharp plunge in oil prices is likely to transfer $1.5 trillion of wealth to consumers, bringing the US back as global growth engine while India is the most promising story among emerging markets, says a study.

Isha Ambani, daughter of billionaire industrialist Mukesh Ambani, is among the youngest business leaders present and her name incidentally comes first among Indians on the official list of participants at this year's WEF Annual Meeting, arranged alphabetically.

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 (NGOs) below 50 per cent in two-thirds of countries.