Workers milk cows at Armstrong Manor Farm in Caledon, Ontario. Computers measure how much milk each cow produces, then shut off the milking process when the flow decreases below a certain amount.

Workers milk cows at Armstrong Manor Farm in Caledon, Ontario. Computers measure how much milk each cow produces, then shut off the milking process when the flow decreases below a certain amount.

Credit:

Jason Margolis/The World

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