Teenage girls harvest tomatoes on a farm in the state of Sinaloa, in northern Mexico. PHOTO BY SINALOA INSTITUTE FOR ADULT EDUCATION
MADRID: No matter what it is called — it is the abhorrent daily life of a billion enslaved humans. The real number of "modern" slaves is understandably unknown. The International Labor Organization (ILO) estimates that more than 40 million people worldwide are victims of modern slavery.