>> this week "global 3000" heads to nepal where landslides pose a threat to the locals. they are placing their hope in a robust kind of grass. whenen will it finally rain aga in? in south sudan a lack of water is m making life verery difficu for cattle breededers. we find out how they're coping. but first we go to the u.s. where mexican families divided by law are able to see each other again through a high-security fence. the border dividing the u.s.a.

and mexico is over 3,100 kilometers long and one of the most heavily guarded in the world. there are border posts, patrols, and fences, and should presidential candidate donald trump get his way, there will soon be a wall, too. over the past year some 330,000 mexicans have emigrated to the u.s. mexico has one of the highest numbers of displaced persons worldwide. since 1965, a total of 16 million mexicans have sought their fortunes north of the border. and yet, according to estimates, only around half of the mexican workers living in the u.s. are there legally. deportations are becoming more frequent. >> it is a remote and barely accessible region of the u.s. southwest. yuridia together with her daughter sharlene. yuridia's parents smuggled her over the border as a baby. now she and her daughter sharlene have come here for oo

very special reason. >> i came to see my dad. yeah. i haven't seen him for seven years. >> how does it make you feel? >> really excited. now i really am. i'm actually going. yeah. >> why is he on the other side of the border? >> he got deported. >> now 21, yuridia shows us a photograph of happier times. she wants to introduce her father to his granddaughter. 4-year-old sharlene tells us she recently drew a picture of she and her grandpa together with a heart and a flower. they sent it to him in tijuana. it's a 40-minute walk to the border. >> there are so many things running through my mind.

so much i want to ask him and tell him. but, i don't know, one thing i really do want to tell him is how much i love him. it's not the same thing to say it on the phone. having him right there actually telling him. >> every saturday at 10:00 a.m., people come to friendship park, located in the no-man's land separating the united states and mexico. here to meet with friends and relatives, separated by the border. finger tips take the place of an embrace. many of theme are in legal limbo and don't have thehe docucuments to travel frfreely and forth. some are in the u.s. illegally and some are tolerated. it's also illegal to exchange packages or belongings through the fence. but in this case, a piece of cloth sealed with a kiss for grandad is passed.

moments of joy and sharing. guadalupe and juana haven't seen their father for eight years. >> we understand. we understand why everything is going on but it's just not fair for some families. that's how i see it. >> what is not fair? >> i just feel like us for an example, we study and we work. we don't have a criminal record or anything. we should have the right, well not the right, but we should be able to -- not just like this. i think we could do better. >> now yuridia and sharlene have arrived. they are allowed through, no questions asked. no one needs documents in this

park. grandpa fernando received sharlene's drawing. they're so close, yet so far apart. like all the others, their meeting is separated by a fence. and, still, it's a special moment. >> i can't even hold him or touch him. it's really hard. >> doesn't it feel a little bit like a prison? >> oh, yeah. that's what it feels like. he's in prison. >> the visitors' area is 15 meters wide. maria is on the mexican side talking to her unborn grandchild. she had to watch the marriage of her son and daughter-in-law via skype.

the fafamily tries to maintain its ties and fights to obtain a visa for the mother. >> i wish i will be with them very soon because they are my family and i'm alone here. i have tried years. >> veterans hold flag ceremonies for the fallen comrades. every year u u.s. army veterans are deported to mexico including hector barajas. the paratrooper was allowed to fight for america, though he wasn't a citizen. after an honorable discharge, barajas fell into trouble with the law. he was sentenced to two years in prison and then deported. >> if you commit a crime but i is a double jeopardy to deport the veteran. the only way to return right now is to be in a box. when you return they'll give awe funeral with full military honors and a flag is given to

your family and they thank them for your service. from a grateful nation. >> a group prayer that resonates on both sides of the border. pastor john fanestil is working with other human rights activists to keep this meeting place open. >> in jesus' name we pray. >> a union representing u.s. border patrol employees has endorsed presumptive republican presidential candidate donald trump. a cornerstone of his campaign is a vow to build an impenetrable wall along the mexican border. >> it is a very effective means of controlling migration in a very specific area but it doesn't really change the larger overall flow of things. so i think it makes some people feel better about the problem because they see a symbol that they think represents some kind of enforcement or control. but it's not part -- it doesn't, yeah, it's not a part of a realistic or meaningful or

long-term solution. >> yuridia understands why trump's vow to build a wall resonates with so many americans but at the same time does not think it is the answer. >> i understand. some come to sell drugs and that makes us who want to succeed look bad. the u.s. helps other reasons but they can't help us for a better reason. if they want us to stop coming here they should at least try to help us as well. >> time to say good-bye. the friendship park clcloses promptly at 2:00 p.m., and friends, families, and loved ones are separated once again. >> now to move on to a story dealing with frontiers on the african continent. a fairly new border separates the republic of sudan and south

sudan which declared its independence on july 9, 2011. the people of south sudan were hoping for peace and a better life. but now a war is raging between the two major ethnic groups over control of this young country. over 50,000 lives have already been lost to the conflict. in the past few days, the capital juba has been the scene of fierce fighting. the entire region is suffering acute e water shortages. the few sources of water along the border to o sudan in the nortrth have to provide for everyone. bahr el ghazal is south sudan's border province with sudan. the past years have been exceptionally dry. but people still migrate t to t regionon. they follow a way ofof life muc older than the two sudans. >> here we have no sea. we have no rivers. so my life is all about water. i search for water 24 hours a

day. i search everywhere. and if i don't find water, i move on. life is impossible without water. >> matar, whose name means rain in arabic is a cattle herder from darfur in sudan. hehe and his hererd have crosse ththe border into o south susud ththe search f for water. they share the s scarce resourc with dinka cattle herders who inhabit these lands. south sudan gained independence from the north in 2011. but instead of freedom and prosperity, a civil war is raging in much of the country. poor rains have added to the problems. this formerly self-sufficient region is acutely threatened by hunger. matar knows he has to rely on the good will of his south susudanese hosts. the wandering cattle herders have an agreement with the dinkas here.

whoever has a cow that's thirsty can bring it to the water hole. one afafter the otheher. so that the water doesn't run out. matar wants to stay here until the rains return in his home region in sudan. his uncle ahmed keeps an eye on matar, because he knows matar can get rather obsessed with his work. >> he spent the whole night here. he didn't sleep. and if he doesn't sleep, his vision gets affected. for our journey, it is very important to get some rest. look at his eyeses. he is always rubbing them. he didn't have any breakfast. >> matar knows that times are tough. there are war and d hunger and almost no economic opportunities. his s cattle are allll he has. >> i chose this way of life because it's whatat i know.

i can't read. i never learned how to use a pen. but here i can manage everything. if i need food, i get it from the cows. anything i need, even my shoes, i get it f from the cows. . >> cattle are a crucial resource for the people of this region. in the midst of chaos, they're a safe investment. keeping the herds healthy is of utmost importance. matar's cavs need to be vaccinated against bovin tuberculosis, anthrax, and other contagious diseases that could wipe out an entire herd. it's grueling work for both men and animals. >> our cows don't behave like e dinka cows, which are used to people. ours are shy. they live in areas where they rarely encounter people, and here there are lots of p people. >> the international committee

of the red cross has helped vaccinate more t than a millioi cows allll over soututh sudan. without the catt h herds, ma peopople here couldn't survive. this is the only spot where matar can find water for his herd. he pays fofor the water r and f the vavaccinations. . it''s welcomome cash, pumpmped the locacal economy. this exchange between former foes may bring some sort of stabability to this troubled region. in the end, cattle herders wili always folollow the water, whether there is a border or not. >> well, this boerer issue belongs s to the state. . we're not afraid of that. we depend on god and walk. we have some debates with people every now and then, but we deal with that amongst ourselveves.

we always reacach a solution i ththe end. we care only abobout water and cattle. thisiss the onlyly life we knon. >> 16 years of 00's -- 16 years of life. global is traveling around the globe to meet teens s who were born in the year 2000. >> i'm totally crazy about dance. >> what moves angel from the seychelles? and what makes buenos aires worth living in for simon? join us in our series "millennium teens." you can find out how on our web page.

>> hello. i'm megagan perefromom perth, western n australia, andnd i'm years olold. ♪ ♪ tell me did you sail across the sun did you make it to the mill kay way ♪ >> after school i like listening to music. i lilike playing guitar and pipiano. and also jusust playing songs that i learned from the internet. i have one olderer sister and o younunr sister. . my older sister lives in america. and my younger sister, she is stilill 12, she lives with us a home. my dad is a maritime surveveyor.

my mom is in the t transport an logistics field. >> my dad, he surveys s ships s he goes to differere ports. sosometimes he has to go away just to survey ships. i just like being aggressive on the court. i like playing with my friends and using the knee pads. usually i start off as the first setter, which is the person in the middle at the front. since my parents are from the philippis,s, it's s interesting visitingng the phililippines so often, because going back to the philippines anand driving around you see small children

in the streets with no clothes and they are dirty and they are bathing in the rain, in the sewers. but they still smile. they still are having a good time. and then i it just makakes me t about t how when i g go home fr schohool and i have a hot showe it's -- i i take it for grarant. as we start helping and contributing i in small ways eventually it turnrns out to be bigger. and when more people get involved, i think thatat's when we can really help other people. ♪ >> and now to our global ideas series. this is where we report about

people determined to preserve our planet's biodiversisity. this time we're in nepal in a mountainous region battling the efeffects of erorosion. when m mud slides ococcur here frequently bury houses beneath them. what can be done about it? local residents are setting their hopes on a very simple plant -- a kind of grass. our reporter wolf geb hardt went to the region around pokhara to find out more. >> once again, the rain is torrential, bringing back memories of how just a year ago an avalanche of mud and rocks thundered down this very slope. there is not much left of farmer kamal parajuli's grandmother's house. kamal and his son kabin are here to pay their respects to her. she was killed in her sleep by

the mud slide. >> she loved me very much. >> he comes with me and he said to me, oh, what happened, my dad? we cannot live in this area. we go from here. we leave this area. it is very dangerous. >> but they did stay, like the other residents of the village of simpani. kamal lost his fields. fortunately, he also has a position as a teacher, so he can support his mother and the rest of the family. at the foot of the mountain lies the village of dundekofant. here the damage from the mud slide was especially severe, and nine people lost their lives. a country in the shadow of the himalayas.

nepal has s been hit by morere 4,000 landslidides since the devastating earthquake in april, 2015. the terrain is under stress, and increasingng numbers of poorly secured roads make the slopes even more vulnerable to erosion. the monsoon has arrived. with its heavy rains, the risk of landslides increases. these school kids are constantly exposed to danger. when a road was built here, an exposed, steep mountain flank remained. for years, mud slides descended on the school yard. it was sheer luck that no one was hurt. agronomist anu adhikari helped banish the threat. she works for the international union for the conservation of

nature and she is relying on amriso, a fall tall, fast growing indigenous plant also known as broom grass. it helps keep the soil from eroding. >> it holds the soil tightly and also holds the soil and controls the erosion and takes the water speed in the slope area. >> the secret lies in the web like network of roots. >> there are very small roots like a small vein which can penetrate deeply into the soil. that means it has a network like a root network like this and it captures and penetrates the soil. it just holds the soil in the network. >> ever since a strip of amriso was planted in the area between the road and the school yard two years ago, the mud slides have stopped.

>> nowadays we feel safe from the flood, which dangerously comes down from the side of the road and this part of the hills. >> nepal's second largest city, pokhara, lies about two hours away. the village of sarangkot is near it. for years its residents were prey to landslides. they came down this steep slope, destroyed the fields, and threatened the lower part of the village. here, too, amriso was planted. it's already helped. in addition, a drainage canal was built. it takes up some of the flood water, reduces the force of the torrents, and diverts the water into the fields. the village nonow has more

security. and it also has an additional source of income. amriso's branched flower clusters can be used to make brooms. farmer januka baral sells them and has been able to increase her income by 20%. >> if i want to earn extra money, as a farmer i have to work very hard for it but with amriso it's faster and more pleasant. it's quite a good feeling. >> januka baral can use am risso stems for firewood, and its leaves provide good fodder for her live stock. but can broom grass also prevent major landslides? in dundekofant, where nine people died, they've built walls at the foooot of the slop meant to break the force of mud and rock slides before they

reach the village. anu adhikari and the villagers are now looking for a solution to the middle area of the slslope. the damage is still visible here. trees have to be planted and the banks of the river secured. >> to control the landslides there is no magic formula. that means we are not a hundred percent sure to control the landslide. if we plant this it will hold the soil compactly or strongly. that means it can resist a little bit high power of flood. >> higher up on the slope the villagers are now planting amriso. the plant even grows in the eroded soil of the landslide area effectively anchoring it. >> if the soil goes down and

there is a landslide we cannot survive. we cannot stay here. amriso protects the soil and then all the members of the family are safe. >> once again, torrents are rushing down the mountain. amriso wonon't offer protection for another year or two. the hope remains that the disaster of 2015 won't be repeatd. >> and that's all from "global 3000." next week, we meet some penguins. in south africa there are now only around 30,000 african penguin pairs living in the wild. why are stocks declining? we find out from local conservationists, who are helping each animal back on its feet. all that and more next week on "global 3000." we love hearing from you so do drop us an e-mail or visit us on facebook. see you next week!

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♪ elizabeth: hello and a very warm welcome to "focus on europe." this week, many europeans are looking anxiously at turkey. that's because people here are increasingly worried about president erdogan's human rights record. tens of thousands of people sacked or arrested and shocking reports of abuse in prisons. a justified response to a failed coup or disturbing treatment of government critics? we'll be talking to one of those targeted to find out. my name is elizabeth shoo. thanks for joi u