"Banamichi, Mexico - Liseth Mendez and Judas Barrios milk two cows covered in a cloud of tiny persistent flies as the sun taints in red the surrounding mountains near a ranch less than a kilometre from the Sonora River.

It seems futile because the milk will go to waste, but it's necessary to keep the cows in good health and it provides the couple another day's pay.

'There are no buyers,' said Adrian Villa Acuna, the ranch owner, hiding his frown underneath a white hat. 'No one wants milk from the Sonora River.'"

Valeria Fernandez reports for Aljazeera September 17, 2014. [2]