in western kenya, for example, it's a scarce resource. there water usually has to be boiled before it's fit for use. and co2 from woodfires is a big contributor to climate change. around the regional capital of kakamega -- not far from lake victoria -- an international company has now set up what it claims is the world's first truly sustainable water purification plan. it gives away filters for free, making profits with carbon credits. here's how it works. she's been away since 6:00 in the morning. now it's nearly midday. molly adhiambo is back from the mountain forests where she's collected nearly 20 kilograms of wood. >> the forest men chase us sometimes. sometimes we give them a little bit of something, even 50 bob, for them to let us pick the firewood. because without firewood we can't survive. >> molly uses the wood to boil dirty water from the river, to kill the bacteria and other microorganisms it contains. she can't get water from a tap. she wants to protect her children from typhus and cholera, diseases that are spread by contami

it's a big game reserve in south western kenya.d a camera. >> they just want in there and started eating. >> that's so weird. >> look at the vultures in the back. >> ones looking into the camera. >> they're sharing and you notice from the shot, now the camera is exposed. >> so guess what happens? >> they eat it. >> one of them grabs the go pro and he runs with it. >> they didn't think he thought it was food? >> it may have been the plan, because now they have an awesome shot from inside the hyena's mouth. >> if you ever wanted to see what inside of a hyena's mouth looks like, now is your chance. >> they get really close, and i think they just start maybe freaking out or they're like this doesn't even taste that great. so he drops the camera and keeps on running. >> you didn't hit it. >> that's going to be a good shot. >> imagine this -- >> worlds with no math. >> see why some celebs are getting the word >>> you know how we think of the french as smart and sophisticated? they do some pretty dumb things too. >> oh, wow. >> yeah, that

kenya. in the cold war era he was western. if they liked him and a halt in many ways he was also the patron of barack obama, senior. by the time he got to the united states the whole reason that barack obama our present exists he organized the left the prouty 81 opinions to the united states. the presumption there was by people higher up in the leadership who are afraid that he would become president. it's never clearly established but for the man that was tried and hanged as the assassin his last words why didn't you go after and that assassination fuelled barack obama senior's frustration. >> host: what are you talking to folks about barack obama, senior the term keeps coming up and this might be misleading that if you would answer, politically connected and political intrigue. >> guest: he was trained as an economist with at the university of hawaii and harvard before he got his ph.d.. but even a fairly brilliant macroeconomist. but his wives and all of his movements were in the government in nairobi in the ensuing decades

they came out to western kenya to the tribe and taught them english. esident obama's father was educated at an anglecan school and mentored by a woman who came to kenya from the united states to teach the gospel and spread literacy. she's the one who brought him to the united states. so it had nothing to do with muslims. >> and another compelling part of the book, and it's a sad story, you believe the president was better off not really knowing or having a life with his father. >> that's a difficult thing for me to say, but as trying to be an objective observer, historian, i think that's true. that -- >> why. tell our viewers. >> because his father was abusive. and he wasn't with obama's mother for more than a couple of months, but the next woman he married, another american, told me gruesome stories about being beaten by him, physically, with his hands, had a knife to her throat. just -- he was an alcoholic and very abusive. and that would have been difficult, of course, for any kid. >> and you also write, movingly, how he struggled with his own racial

the seventh day add venntist came to western kenya and talked in english. 's father was educated at an anglican school and basically mentored by a woman who came to kenya from the united states to spread the gospel and teach literacy. she's the one who brought him to the united states. so it had nothing to do with muslims. >> one of the most compelling parts of the book, and it's a sad story, you believe that the president was actually better off not really knowing or having a life with his father. >> you know, that's a difficult thing for me to say. but trying to be an objective observer historian, i think that's true. >> why? >> because his father was abusive. he wasn't with obama's mother for more than a couple of months. but the next woman he married, another american, told me gruesome stories about being beaten by him physically with his hands, a knife to her throat. he was an alcoholic and very abusive. that would have been difficult for any kid. >> and you're also right how he struggled with his own racial identity. give us an example. >> that is the