in a search for suspects, joshan's family suggested police interview john hansen, a 60-year-old familyend who lived nearby. >> john was an older gentleman who hung out at the house all the time with us. in my opinion, he seemed after a while to get too close to the children. he always wanted to be their friend, more so than the friends of an adult. >> within 24 hours of finding joshan's body, investigators went to hansen's trailer to question him, but he was gone. >> we talked to the park manager and some of the neighbors and they said they hadn't seen him in a day or two. >> a background check revealed hansen, a day laborer, estranged from his wife, had no history of violence. >> a 60-year-old man, having teens hang around his house does lead to suspicion as to what is going on. >> while police searched for hansen, criminalists measured for tire impressions found near joshan's body. those measurements and tread patterns were entered into a computer database that showed 20 different tires manufactured around the world. >> there were then several different manufacture models that could

east africa michael hansen senior staff scientist at consumer union thinks the initiative is nothing more than a publicity stunt simply designed to improve the reputation of g.m. john's. things like golden rice or golden bananas are attempts to say oh we can use this technology for a useful purpose that will help the poor so i see it more as propaganda purposes and i think the reason that they were trying so desperately with the genetic engineering is it does have a bad name eighty five percent of the global acreage in engineered crops are all herbicide tolerant they're designed to be sprayed with herbicides they're doing they're designed to have you spray more pesticides on them part of the problem is in the in the united states for example we don't require safety assessments or feeding studies before these products are allowed on the market before these are even fed to people they should go through a safety assessment. and be fed that you know not only to animals before they're given to humans because in other countries this would not be allowed. for the will the headlines will start with the boat that capsized malaysia's western coast forty two people are feared t

hansen of consumer reports, jon entine says it's scaremongering. but jonathan, seeds of death and holes in the gi tract, that sounds scary. >> there is no scientific evidence that supports the scare. john: there must be some. >> not that there's any harm. we've eaten about 17 trillion meals since gmo's first came on the market. there is not evidence about someone getting so much as a sniffle. you can create scare stories, fear of the unknown, if we're going to rely on empirical science, no evidence. john: michael, i got to say i agree with him. i think consumer reports scares everyone about trivial risks. >> the fact of the matter is genetic engineering is different it. raises risks that should require assessment before the crops come on the market, and those assessments haven't been done. john: jon, they haven't been done? >> he's wrong. he's verging onying because he's implying that -- very strong words, i understand that. he's implying we don't have a regulatory system in place to evaluate the safety of gmo's. that's flat-out wrong. john: back up a second, you say this is new and what you mean is for years we've had genetic modification but done slowly by cross breeding. >> no, the