and that concerns steve durham. he doesn't want narcotics in his jail. >> so they have the potential for abuse. they have the potential to be used as contraband, they have the potential to become barter inside a detention facility. and most detention facilities are hesitant to do that. >> reporter: shanna sermon wants to get the vivitrol injection before she leaves. she also hopes the jail's social worker can find her a spot right away in a residential treatment program, because she knows staying clean is going to be hard. >> i'm really nervous, but i'm excited. i'm excited because i've seen what this has done for me in here. i can't wait to get the real aspect of it outside. >> sreenivasan: how often does human activity trigger earthquakes? read more at pbs.org/newshour. >> sreenivasan: last month at the united nations general assembly, canadian prime minister justin trudeau promised to do more to help his country's 1.4 million indigenous people. he said there needed to be an effort to "correct past injustices and

>> mason: for the past four years "on the road,"" steve hartman has been follow chris rosati from durhamrth carolina, on his journey to make the world a better place. we're sorry to tell that you journey came to an end this week. of a.l.s. >> reporter: i first met chris rosati in 2013 after learning of his twisted plot to steel a krispy kreme donut truck. >> and then just go around and give away the donuts. i was going to go to the nearest school, because once i knew where-- >> reporter: this plan has some holes in it. i'm not spe donuts. >> it dit did. >> reporter: you're just going to pull up to a school and say, "here, everybody, here's a bunch of donuts." >> now that you said that. >> reporter: not to mention the legal ramifications. krispy kreme gave chris and his wife, anna, a bus load of donuts, which they joefully delivered to city parks, cancer wards, and children's hospitals. >> we're glad to make some people smile. because if i can't impact a waste. >> reporter: after that first story, chris' purpose and passion was quoted on church signs, celebrated on media, and replicated i