62 people own as much as 3.5 billion of the world's poorest people.
And by 2020 a mere 11 people could have the same wealth as half the
world, says Winnie Byanyima of Oxfam International.
Can the wealth gap be closed so we all get a fairer slice of the pie?
About $7.6 trillion is hidden in havens, depriving governments of $190bn in tax revenue every year [Eric Gaillard/Reuters]
