A new report reveals Australia's two richest billionaires - mining magnate Gina Rinehart and property tycoon Harry Triguboff - have more money than the bottom 20 per cent of the population put together.
International aid agency, Oxfam, says it's part of a widening global divide with the wealth of just eight of the world's wealthiest people ...equal to that of billions of people in its poorest half.
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