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To avoid being imprisoned in a camp, the Nakai family fled to work on a sugar beet farm in Colorado, according to the Los Angeles Conservancy.

Neonicotinoids were banned in 2018 but sugar beet farmers have been given special permission to use them every year for the past four years to fight virus yellows, a disease spread by aphids.

Glyphosate is the world's most heavily applied herbicide, used on crops including corn, soybeans, sugar beets, alfalfa, cotton and wheat.

They are currently used by sugar beet farmers to protect their crops from virus yellows, a disease spread by aphids.

Neonicotinoid pesticides were banned in the UK in 2018 but have been approved four times in a row in emergencies to tackle a virus that attacks sugar beet.