For millions of Americans, a trip to the cinema involves loading up on popcorn and supersized drinks before the show.
But when the much-anticipated documentary Food, Inc. opens this week, many may find themselves unable to finish their snacks as the film exposes some unsavoury realities about how food reaches the dinner table.
"There are no seasons in the American supermarket", a voice intones in the opening scene as a camera swept past supermarket shelves groaning with plump-breasted chickens, perfect cuts of meat and bountiful fruit, vegetables and grains.
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