years, so the training investment and reward is big. haifa years, so the training investment and reward is big.— years, so the training investment and reward is big. how do you train and reward is big. how do you train a ra like and reward is big. how do you train a rap like this _ and reward is big. how do you train a rap like this to _ and reward is big. how do you train a rap like this to find _ and reward is big. how do you train a rap like this to find landmines? . a rap like this to find landmines? —— rat. a rap like this to find landmines? -- rat. ~ , -- rat. we use positive reinforcement - -- rat. we use positive reinforcement so i -- rat. we use positive reinforcement so we i -- rat. we use positive i reinforcement so we start -- rat. we use positive - reinforcement so we start with socialising the rat, and then it will associate certain things with food and then we teach it to do something in order to receive the food so it will have to indicate something which is filled with explosives compared with other smells, and that is how it learned to distinguish the explosives, and then gradually it gets more difficult so we have a training field here, in tanzania, where more than a thousand mines are and then the training takes about six months, and then we export the rat, for