In Mozambique "a human de-miner can take up to 2 weeks to clear a 200 square area," reports Al Jazeera's Haru Mutasa, but "a trained rat needs just one hour to do the same job." In Tanzania, Bart Weetjens, a Belgian Buddhist monk, and his company APOPO are taking the field of vapor detection to the next level -- training rats to detect pulmonary tuberculosis. Below, Weetjen talks about how his rat crush became a social enterprise:
