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Farmers crack the free range code

Chickens will be farmed at 20,000 birds a hectare - 13 times more crowded than the current Australian code - and still qualify as ''free range'' under changes to egg industry standards to be introduced this month.

The folly of big agriculture: Why nature always wins

Large-scale industrial agriculture depends on engineering the land to ensure the absence of natural diversity. But as the recent emergence of herbicide-tolerant weeds on U.S. farms has shown, nature ultimately finds a way to subvert uniformity and assert itself.