i put people in danger and damaged the country. after the war was over, i decided to clear mines by myself. now people have joined me. now it's safe. the villages are requesting us to de-mine because the people are afraid of mines. >> translator: i have done a lot of good things, different from during the war. i have cleared thousands of mines. i want cambodia to be safe. >> larry: extraordinary. our hero has even adopted child victims of land mine blasts. to see more of aki ra's story or nominate someone you think is changing the world, go to cnn.com/heroes, nominations close this sunday, august 1st. laura and mark come back after this.