announunr: opportunity. prosperityty. optimism.. under, where thehe great barrir reef is in m mortal ngerer. and we head to chile, to see how farmers are dealing with rising energy costs. but first we go to afghanistan, to meet anan amazing woman who

against all odds is tackling the country's massive drug problem. afghantan n halongng beethe world'largest oducernd porter oopium the substancfrom wch heroin derived. and ever more, opium poppies are being planted. the united nations says the area under cultivation has soared 63% in just one year. and opium production has rocketed this year by 87%. much of the drug trade is now under the control of the taliban, for whom it's a huge source of revenue. opium and heroin use is spreading fast within afghanistan as well. a full 10% of the population is believed to be addicted. reporter: twice a we, , laila haidari gogoes down under r ts brididge in kabul.l. a grgrim sight awawaits her --s is by far the most horrific sp thehe afgn capipita

the cityty's drug addidicts are hod upup here, thoususands of them, just trying to survi this d dark hell. the stench of excrement, uri and vovomit is unbeaearable. rats scurrrry alg the e walls. every mornining, between five d ten dead bododies e carrrrieout. laila haari isishe ang o of kakabul's drug-a-afflicted. laila: if one e of you wantsto come with meme, you shouldld sd reporter: hehe drug addictctse irtable,e, a aggresssse. a are oy ablele to fi bececau we camwith l lai. the local police hav't d dar to set fooundeder e bridgegeor ages. 12en resesnd to ilila's fer ththis morning -- the laste decing at t thlast minine. laila puputs the men o on a bue had d arranged ahehead of time..

they a dririven a hououse at e edge o of the city.. laila: why do i do this? my brother was a drug addict. i had to watch him slowly lose everythingng. first his job, then his family -- in the end, he gave up and died. reporter: for those who arrive here, the first step is to scrub the dirt from their bodies. then, everyone's head gets shaved. those who decide to leave behind the hell under the bridge should mark a new beginning -- also physically. laila often lends a hand. she is 42 years old, and an unusually strong-willed, independent woman in this deeply conservative country. laila owns a restaurant not far from the city center. it's popular with kabul's upper middle class. the money she earns here pays

for the drug addicts' rehabilitation program. a place to stay, meals, a few medical tests -- laila's therapy program does hava a limit. laila: i i have not forced anyf you to come here, you are all here of your own free will. i don't care if you speak pashto or dari, or to whom you pray. you can stay for one month. after five days, you will begin to do some light exercise. then you will be given a few tasks. reporter: for seven years, laila has been trying to help men like these get off drugs, without any medication. she tells them to drink as much water as possible, and that should be enough. mahdhd i have prprayed to allaa thsasand times to o show me te papath away from drugs, to givie another chance. perhaps it w will happen toda. reporter: ali palang has come out from under the bridge. he's been begging, searching through garbage, and when necessary, also stealing. ali needs money for drugs.

a bag of heroin costs around two euros. it doesn't sound like much, but by afghan standards it's a lot. still, there are more than three million drug addicts in afghanistan, around 10% of the popupulation. ali: there's no work, people just hang around without any prospects. that's why people in afghanistan turn to heroin. i managed to get clean once for more than a year, but then i started again. reporter: this hill is another gathering spspot for kabul's dg addicts. they consume drugs here in the open. they are young, and old -- some are even children. the afghan police gave up a long time ago. some cash in on the problem. afghanistan is floododed with drugs ---- production has increased in rececent years. this hilill is a place of desolation. afghanistan -- the world's biggest prododucer of drdrugs s now susuffering fromom the dr'

curse withinin its own border. but there is a bright spot in this story. mohammad alizada also lived under the bridge for many years, but he's been drug-free for two yeyears now. he stayeyed with laila, and d s out whwhen the new a arrivals n to make rugs. these are then sold to support the program. mohammad: i used to be a policeman. during my shift, i often came across alcohol and drugs. later on, i took heroin on a regular basis -- until laila took me in. reporter: and what would have happened if he had not escaped from under the bridge? mohammad: i'd be dead today. reporter: the men have started singing love songs again. for laila, that's a good sign.. the wiwithdrawal prorocess s

extremely difficult. of all the men laila takes in, only around a quarter of them manage it, and stay clean. her dream is to have a a propr clinic with experienced doctcto, so she can rescue many more drug addicts from the hell beneath the brbridge. host: we h head now to c china, ere more and more people have a smartpho, computer, or blet -- - and internetet use s susurging. momore than lflf the populatatis now online -- an estimated 755 million people. china is world leader in e-commerce, with sales this year of 452 billion euros. but censorship limits online access, and leading global players are not always welcome. chinese firms dominate the chinese web. there's wechat. bau, the mn searchngine, the unterparof googl youku tuu -- chi's youtu. renren, ich likeacebook. and cotless otr servic. for cal provers, thehinese

rket oers a weal of oppounities --ncludingor some unliky internet stars rereporter: e e wee hours s are best timime for yu li.i. he c cracks a few jokes anlolos at t screeeen. he has more than 150,000 viewers right now. and the numbers keep going u u. now a shshort-skirted d dances featured.. one of his team,he's a hit.. agagons annumbmbers ash. yu li gives s his all. the figugures translatate into virtual cash, and then lat to r real sh -- - a t of reaea ca. yu li: today il earn wl ovov ,000 eur. one e viewer alone has giv m e 13,000, otheher a couple o of thousand. i'i'm very hpypy.

repoporter: three e hours of j, shouting, popouring on thehe c. yu li i is china's n number onee streamamer. he has more anan 15 millioion susucribers. statate tv in chinina is censo, its shshows pedestririan and bo. instead, this is wei a and silly, andararmless. everything goeoes here excepepx and polititics. yu li: lotots of businesess pee watch, the big bosses. they use i it to relax.. eyey give mononey ithe sasame way theyighthtpend over 10,000 euros on a a bottle of w wine a beijing or shanghai cl.. it's's tir way of treang themselv.. reporterer: nextorniningyu li is clad in a moisturizing fiaial mamask -an antntide to toooo littleleepep one of hisupupilpops by. she was s adce from the man shcalllls e grand d ster.

han:rand m mter, not many co toy chat room. whwh can i do differeny? l li: youeed d to sw somethining special, s somethg that makakes people lalaugh or relalaxes them mentally. if you want them to like you, some part ofof you needs t to o inin their heartrts. reporter: hahan bing ying'g'sy hastarteted dly. and last night was difcucult, too.o. herquipmementoesn't w wk, inuding ththe microphonene. anand even wang g honjun -- whwo everyone calls the old terer, ththe man who can n usually fix everything -- was baffle and t alall han bing y ying wand was to revisit h her performane from yesterday. her chance to acquire fame and wethth in hegranand maer's sh. even sitting there, sisinging along doesn'n't help. she e messed up ---- there weree simply toooo few viewers. han ng ying: i just wasn good enoug

i was too nenervous, because hs shshow is so popopular. it was a bad performrmance. reporter: : her "stage" " is at sheded with her r woulbe inintern starsrs. cacaes are strewn throughout, lilike spider's s webs. her workspspace doubles s as a bedroo and in the sharered kitchen -- complete with leftover f food - old tiger monitorsrs the show. it smells of cat and old smoke. and there's a a flatmate nexext door, , noisily rapppping at break-neckck speed. han n bing ying trtries again. her show b begins with h her applying h her make-up.. thers s no sucthining asrivacycy herere. ofof cours shehe earnsar l les than her grarand master. d, a as onof hisis eloyees,, she has to give him rcentatage he the bs, and s's the intern proleriat. sometis old tir chats o, just to get inings gng.

habing y yg: at first i wa real excited and fulof hope. i ought,f f they can become sts, w why n me? now, after fewew mths, i know hohard this busine c can b somemes i i so saafafter th livestream because trere we so w w viewer i c crynd cry. porter: her granmastst is on throadad -- a rolollsoyce whwhh cost half a milln n euro yuyui used to be aar mececnic. hihis dramatic r rise to riches perhs onlyly psible ininhina, with its popopulation of 1 1.4 billioion. yu li: i bought myseself a rols royce bebecause i ofteten meeth inteternet personanalities, fashioninistas, trendsdsetrs. the otothers usuallyly buy mers susuv's or landrdrovers.

i bought this instea reporter: yu li now thksks on a didiffert scalale. everythihing has to bebe bi. lilike his new h headquarters,se han bing ying and the other live streamams will be based. ththe architect t explains thahs isis wherehe a accounts depapart will be, because it's good fgg shuiui. anand don't forgrget, says yu uo plan in enenough space f for my good-business-budd.. ananthen it's back to his marble and lt s suite it's nearly showtimegagain. his s hourof flilirtion withth e lonely and the rich who he mtt entetertai and w whore becomomg more and more demanding, mor crital w when repeaea himself. susuddenly, itit all comes out. yu li: it's huge pressure.e. lookt t my swollen e eyes. i cacan hardly sleleep. day and nighght get mixed d un th busininess. i don't veve frien anymomo. i can't meet anyone for lunch, just very briefly in the

evening. and then h have toet back. this work cuts m me off from rl lifefe completely.y. rereporter: and then he rrrris on, if nonothg had hahaened. tellhis jokes,oes s his show anit seeeems he y bebe seahing for the same thing as his clnts. as if f wh he really wantss not the money,oror t viewers, chile. rising energy prices have been making it harder for dairy farmers to earn a living. so, they have been looking for ways to bring down their costs in an eco-friendly way. weeaded to t the south of the country, near osorno, where our reporter m met farmers who are

addrdressing the problem. reporter: it's not a bad life for a cow here. nowhere else in chile offers such lush pastures. and nowhere else in the country produces as much milk as the region around the city of osorno. adadriana mohr has been a farmr for 38 years. her family came to chile from germany 170 years ago. she says milk has always been produced by natural methods on this farm, and she wants it to stay that way. adriana: we have to work with what nature gives us, respect nature and take what it offers us. but we mustn't harm it. that's the only way we can leave the earth in good shape for our descendants. reporter: at 4:00 p.m., it's time for adriana's 250 cows to be milked. the milking station's electricity bill comes to 1000 euros a month. energy costs in chile are high,

because raw materials needed to generate power still htoto bee imported. the high cost of power worried adriana mohr. she wanted to lower her overheads and also wanted a climate-friendly solution. so she decided to put a photovoltaic system on her roof, at a cost of 2400 euros. her energy costs are now 8% lower. adriana: the system generates up to 300 watts, and that's used straightaway for the milking process. so we don't use as much energy from the grid. reporter: but making a profit with milk is difficult for farmers in chile. they only get paid 27 euro cents a liter. adriana's farm is large enough for that to be enough to live on. it's not the farmers in chile who are raking in the profits, but the companies that process their milk.

at this factory, adriana's fresh milk is turned into milk powder. alejandro schilling, another dairy farmer with german roots, lives 50 kilometers away. with 1200 cows, his farm is one of the largest in the region. he says anyone who wants to make money with milk has to expand their farm. alejandro:o: saving energy is sily a an economic f factor fr me. i've always sasaved wherevei could, whether with energy or elsewhere. if you have a business, it has to be economically viable. reporter: a few years ago, alejandro ininvested closese te million euroros a largegeilking plant. 400 cows can bmimilked he atat a time, saving employees and energy.

modern vacuum pumps make the milking process more efficient. but what alejandro is really proud of is the plant's cooling system. he loves to talk about it. alejandro: the milk comes from the milking shed through this filter. and through this filter, it goes to these coolers. the milk arrives here with a temperature of 37 degrees celsius, and is cooled by water that's 10 degrees. the milk is cooled to 18 degrees celsius, and then the water -- which is now warm -- comes out. reporter: that saves him a lot of money. now alejandro wants to make further investments. annika schuttler and her team from the german-chilean chamber of commerce have come to visit him. they advise farmers on

energy-saving measures and renewable energy sources. annika: the weather in southern chile is very similar to the weather inin germany. there's good sun exposure, but also a lot of rain. so photovoltaics is an option, but hydro-power might be even better. here we want to see if the conditions are right for building a small hydroelectric power plant. reporter: the team takes pictures to show to a construction company that builds hydroelectric plplants. if the price is right, the small unit could be completed next year. adriana mohr would like to make further investments in renewable energy, without having to expand her farm. but for now, she doesn't have the financial resources. adriana: for that, we'd need a subsidy.

otherwise we wouldn't be able to protect our resources, and produce excellent milk -- - mik that tastes of southern chile. reporter: right now she's looking out for the next gegeneration on heher farm. these heheifers shouldld start producing milk in about one year's time. host: austraralia's grgreat bar reef i is a breathtataking natl treasure of immense beauty and diversity -- but it is under threat. in fact, it may be dying a slow death. coral bleaching events are becoming more freqequent, leavg bebehind devastation. in many places, the colorful underwater world has turned into a graveyard. rereporter: thisis has got to be of t wororld'sest lolocaons fofor a unersisity lture.. and d ese researchers, students anand assistantsts, clad in bk wetsuits, arare about to g g o work. here, on l lizard islandnd, the

ininvestigating the underwatar world of the great barrier r re. dr. anne hogoggett has liviven lizard islsland for 27 y years. no one knows the reef w well as shshe do. and e's s deep conceceed. dr. hoggt: t thelimate scientists who a fororasting wh is s gointo hapappein the coming dececades as the e world wawarms up predidicted that wewd geget back to baback coral blelg by about t the middle ofof this cecentury. but here we are in01016/17, d we are alrlready having g coral bleaching g one year aftfter e next. so we are decadeahahead ofherere the rsrst ca scenanario suggested wewe would be. reporter: nene leadshat t ses to be the rfrfecaussie lifestyl-- a alo with her huhusban lyle.e. their son alex grew up on zazard isisland's beachches -- learneo dive therere as a child.d. the e reef is not t just a resc subject for the trio, it's first and foremostst their own b back.

and their backyard ichchanging draticalally two years s ago, this aqaquatic parase w was igood c contion, its blue lagooprisisne and betifuful. but catastrophe has struck. the ter r is wming a at alarming r rate, bleachihing e corals. first they l lose their cocol, then they didie off. anne n now dives a world devd df lilife. nothing g but grey -- - a saddg sighght. dr. hoggetett: lots of d dead c. we sawaw two living g branching corals -- two. anlolots andots s of dd coraral.

reporter: dedespite the bebeaul blue skikies and wondederful we sands, thehe great barririer res fightiting for its s survival. anne has no o doubt that c clie change is s responsible e fore bleaching. dr. hohoggett: it's devastatin, it's heartbreaking, absolutely heartbreaking. in the l last four yeaears we e had twtwo major cyclclones ando coral l bleaching epepisode. and thosose have realllly damd the coralsls. anand that's goioing to take ay long time fofor it to recocoverm th. rereport: therere'color everywhere here. thgrgreat rrier r ef is more an 2 200kilometers long. 's theheorld's largest cor reef e ecostem and includesosome 3030 individual reef bunot far from the reef onhe mainland, atbbotot pnt, therer are man-de mountai of co. thworld's laest co port is being built rere. coco, of a t thing-- a m maj greenhouse gas source. at nrby y arlibeach, the localsre seethg -- ang their gornment h h approved

the terminal's constctction. they say coal l and coral jujt don't go together. >> as a tourism operoror, i'm destateded. we're buililding this mimine,r adadani is buildlding this minih a coal terminal, thihink 40000 shs out t there. how is t tt going toto possiby benefifit the wod,d, queenslan, tourism m operators, a and kids who've a an expectatioion ey'e going to s see the same beauty thate see every day?y? reporterer: the reef is roughy 10,000 yeaears old. locals say it's in the process of dying. on thehe beaches of f cairn, indigenonous australiaiansre collecting sacks of asash. ththe deendantnts australal's original inhabitants see themselvlves as custododians oe laland. they, too, a are concerneded at the laland of their r forefath. victor: snow, rainforest sertrt. whatever's g going to affefecth element t on top or ououtsidee worlrld, it's goining to be bibr impact on auaustlia, bececausee

hahave five difffferent elemenn one countrtry. and d that thehe rson why ve all ts globalarming that's affecti our r rf, affecting r seseasal pattetes. laririssa: as abororiginal peo, we wanant to see thahat that re ill ththere, like i said. anand i gus itit allomes d dowto education and saying t to peop, you know, haveve respect wheheu go out to those plac, lolook afafter that, bebecause we want for genenerations to c come. repoporter: the grgreat barrierf austral's most faus tourisattraction there'still time to save it t -- it's just a question o prioritieses. bubut the clock k is ticking - - loudly. host: that's all for tod. send u us your comments to global300000@dw.m, or r vit us on facebook, dw global society. see you next time. ♪ [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy.

visit ncicap.org] announcer: opportunity. by dhl.

(african vocal m music)