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No farm workers? How about a robot?

Immigrant farm workers pick most of the lettuce in the US. But crackdowns on immigration - along with immigrants taking better jobs -- are creating a labour shortage. So some farmers are turning to robots. Valerie Hamilton reports.

(Image: Blue River Technology鈥檚 LettuceBot uses sensors and cameras to thin lettuce. Credit: Valerie Hamilton)

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Duration:

2 minutes