. >> one of them was 11-year-old ayman khan. >> ayman khan's 13-year-old brother zewarshaa told me what he remembers from that morning the two boys were out collecting wheat together. >> zewarshaa told me that he lay down beside his brother to hide afraid that he would be targeted by the soldiers on the ground or by the aircraft flying overhead. >> their father nouroz khan tried to come and collect his son's body. >> it was three hours nouroz khan said before he could reach his sons. >> while reporting this story, i interviewed over thirty eyewitnesses and family members of civilians who had been killed during the military operation. but i wanted to find out more about who was responsible. i scheduled an interview with the united nations office that had published the brief report about the deaths. but just a few hours before we were due to meet they pulled out. they told me that they stood by their findings, but wouldn't give me an on camera interview. i was bitterly disappointed. i was able to track down a journalist who told me that then president karzai had sent an envoy to investiga

. >> one of them was 11-year-old ayman khan. >> ayman khan's 13-year-old brother zewarshaa told me what he remembers from that morning the two boys were out collecting wheat together. >> zewarshaa told me that he lay down beside his brother to hide afraid that he would be targeted by the soldiers on the ground or by the aircraft flying overhead. >> their father nouroz khan tried to come and collect his son's body. >> it was three hours nouroz khan said before he could reach his sons. >> we're closing that cycle. it's very easy for us to have 100% recycled material. >> we're the first plant in north america to be energy positive. >> a lot of these small businesses are recycling for economic reasons. >> techknow's team of experts show you how the miracles of science... >> this is what innovation looks like. >> can affect and surprise us. >> i feel like we're making an impact. >> let's do it. >> techknow - where technology meets humanity. >> while reporting this story, i interviewed over thirty eyewitnesses and family members of civilians who had been killed during the military operation.