On a farm  in southwestren ontario a young girl work in the hot august sun ohoeing tomatoes . at a nearby field a tractor roars loudly as it pulls a sprayer behind it the girl breaths in slowly their taitedby a fait whiff of chemicals as a breezevcomes up shefeels a light spary of pesticide residue she wipes her hands onto her grass - stained plats and continues working along side a crew made up of migrant workers no one compails