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A paddy fieldRice prices have doubled since the start of 2008, provoking riots in some parts of the world and global concern at the cost of staple foods.

Several big producers such as India and Vietnam have slashed the amounts they sell abroad. But not the world's biggest exporter, Thailand.

So are those involved in the Thai paddy field getting rich? The BBC's Lesley Curwen travels to Thailand to find out who's winning and who's losing from the spike in the price of rice.

The audio can be accessed from the BBC's Assignment page