later, set to shine. we look at seoul's transformation to a modern metropolis as and hosts the g-20 summit. as if by magic, harry potter heads for the final curtain.

the film stars reflect on 10 years of hogwarts. >> anger over the austerity measures starting to bite across europe has reached the streets of london. students protesting outside the offices of the governing conservative party left windows smashed and several police officers heard. the students were angry over plans to increase university tuition fees, which could triple the amount they have to pay. tom simons was there. >> the doorstep of the conservative party's headquarters. just one week after the government announced its plans for the future of university. the building was on the route of

today's march, and it was besieged. at the front, a small, seemingly uncoordinated group of protesters was intent on fighting the police, but behind them, a crowd of thousands refused to move. this standoff has been going on for some time. there are people inside behind me. fire extinguishers have been thrown from higher levels, and items drop on the police below. at one point, this door was smashed down while hundreds of protesters surged four other instances. one protester got as far as the conservative's in your office. the rest occupied the lobby. -- one protester got as far as the conservatives in office. it had started peacefully. a lunchtime march, speeches, students are doing rather than

rampaging. their union's president is furious at the scene that unfolded. >> 50,000 students had come to protest peacefully, and they made a serious point, but they are in jeopardy of being completely undermined by the outrageous actions of a small minority. >> london's mayor added his voice to the criticism. >> the city has a tradition of allowing people to protest peacefully. what is so sad and disappointing is that a tiny minority of used their rights to a peaceful protest, engaging in acts of criminality and violence that endanger people's lives. i hope those people will be caught and prosecuted. >> most of those watching what was going on here today did not condone it, but did regard it as an understandable reaction to the government's proposal. that a lot of people are very angry about this. >> i think has gone a bit too far, but it is exciting to see that students are willing to

stand up and make their voices heard. >> you have got the budget cuts, and now you have got the rights. >> tonight, scotland yard admitted it mistakenly assessed the risk of violence as low. only 200 or so officers available to defend a building protesters were always expected to march past. >> i just do think that we cannot -- we have also got to ask ourselves some questions. [inaudible] >> there were arrests this evening as the crowd thinned and order is being gradually restored. >> while angry students protested here in london, the british prime minister was addressing university students in china. david cameron set up the case for economic and political freedom, telling students in beijing that open media and rule

of law were the best guarantors of prosperity. >> the rise in economic freedom in china in recent years has been hugely beneficial to china and to the world. i hope that in time, this will lead to a greater political opening because i'm convinced that the best guarantor of prosperity and stability is for economic and political progress to go in step together. in some respects, it already has. ordinary chinese people today have more freedom over where they live, what job they do, where they travel than ever before. people blog and text more as well. it is right to recognize this progress, but it is also right that britain should be open with china on issues where no doubt, partly because of our different history and culture, we continue to take a different view. >> while staying in china, a father who started a support group for parents whose children

had been poisoned by tainted milk powder has been given a 2.5-year prison sentence in china. his own son became ill, and he was charged with inciting social disorder. that is despite the fact several very -- dairy companies were prosecuted. >> the family emerged from court, devastated at the sentence. to them, he was simply fighting for justice. that it is unfair -- >> it is unfair they have sentenced to two years and six months. i have already extended the sentence, and he has already been detained for a year. what else do they want? there is no one to take care of our children. >> it was on behalf of him and thousands of other children that his father protested and set up a self-help group, but he was arrested a year ago, accused of inciting social disorder.

that even though they maintain that he is guilty, why must they hand him such a heavy penalty? we have plenty of cases like this. they all get 6 to eight months, and even the longest sentence is not more than a year. >> this is one of the thousands of children who became sick from drinking tainted milk. he had to had kidney stones removed. -- he had to have kidney stones removed. authorities arrested the culprits but have clearly been unsettled by the spontaneous public anger and media publicity the scandal provoke. >> here in the u.k., the police say a bomb found on a cargo plane at east midlands airport last month was timed to detonate over the eastern seaboard over the u.s. the bomb was sent from yemen and was discovered inside a printer cartridge when the cargo plane was searched at the airport. a second bomb sent from yemen

was intercepted in dubai. the number of people killed by the cholera epidemic in haiti has risen to more than 640 with aid agencies desperately trying to slow the spread of the disease in the capital. doctors working around-the-clock say they are alarmed by the speed at which cases are emerging in the city. the new video game "call of duty: blacktops --black ops" has come under fire because one of the missions requires players to kill the former leader, fidel castro, in the name of entertainment. players have to fight their way through the streets of havana during the height of the cold war. a series of attacks on christian neighborhoods in baghdad have killed at least three people, and the militant group has warned that it considers all christians in the country to be legitimate targets. five separate areas with large christian populations were hit. 10 days ago, more than 50 people

died after they were taken hostage at a catholic cathedral. >> just one of a dozen places in different parts of baghdad were bombs went off early in the morning, all of them targeting christian neighborhoods or homes. one man was killed here, and four others wounded. the target was this house, where there was a christian family who has now fled. their muslim neighbors are as angry as the christians are frightened. >> i blame the government and its failed security plan. they are responsible. at least in downtime, there was security. forget everything else. that is what we want. >> these bombings carried a clear message -- the militants are out there and can carry out these strings of attacks against targets of their own choosing. it is a blow not just to the christians, but also to the iraqi government and the man trying to keep his job as prime minister. >> the attacks came less than a

day after prime minister malaki visited the cathedral where the christian worshipers were killed by suicide bombers who took them hostage two sundays ago. the prime minister told the christians they should not leave the country, but many christians have left, and more would like to go. the christians we talked to after the latest bombings all said they planned to stay. >> it is not just the christians being hit. we are all being targeted. everybody everywhere. one day, it is a church. another, it is a mosque. >> i'm not thinking of leaving. why would i do that? i was born here, and it is my home. but lots of people have left. >> by baghdad standards, these were not massive bombs. it was more a demonstration that the militants can carry out coordinated attacks all over town, whenever the government says or done. -- whenever the government says or does. christians are caught in the

middle as others have been before. when tensions are rising, iraqis are asking -- what next? >> a russian newspaper editor nearly beaten to death two years ago has been convicted of slander. a court near moscow said he knowingly spread false information about a local mayor while he was reporting plans to build the road through a protective force. boeing has halted test flights of its long-delayed 787 dreamliner after a fire forced an emergency landing in texas on tuesday. the plane is already nearly three years behind schedule. you are watching "bbc world news." still to come -- the crucial ingredients in high-tech goods. what japan wants to be less dependent on china. -- why japan wants to be less

dependent on china. the orthodox church in georgia is growing at an amazing rate. so much so there is barely any space for new churches as the building's overflow with new members. one monk has decided to seek extra solitude on a rocky outcrop, which will soon be completely cut off from civilization. >> what does it take for a 55- year-old man to seek isolation on top of a rocket -- rock? to remove himself from everyday life? for this man, it was not his choice but to god -- but god's. he has been rebuilding this monastery, but he is not the first one to set foot on this rock. his predecessor died of here sheltering from the elements 500 years ago. his sacred bones are still

treasured. "i want to stay here, close " he says. "i'm still waiting for the blessing from the head of the orthodox church. he told me to wait, but recently, the patriarch came here and blessed it. i do not think he is against the idea of me staying here anymore ." if he is allowed to stay here, he will be emulating the monks of greece, among the first christians to seek this sort of cliff tops solitude more than 15 hundred years ago -- cliff top solitude more than 1500 years ago. there is no doubt he found his solitude up there, but in another sense, he is not alone. this is one of 450 churches and monasteries that have been rebuilt in the last few years with government money. another sign of the power of the orthodox church here.

>> this is "bbc world news." these are the top stories. violence erupts in central london during a protest by students and teaching staff against the increase in university fees. china's verdict -- two and a half years for the father who incited protest over tainted baby milk. president obama and other world leaders have been arriving for their g-20 summit in south korea, a country transformed from the post-war wasteland of 60 years ago. it is a prosperous international powerhouse for industry and innovation that successfully avoided the worst impact of the global recession. >> it is the morning rush hour, and seoul is on the move. in this city of over 12 million people, everyone has some way to get to. the g-20 marks a coming of age

for south korea, building on its economic credentials as an asian giant, but many here still remember a time when prosperity was barely a dream. , capital of seoul korea. >> at the end of the korean war, seoul and its people were struggling to survive. archives show a ruined city, major thoroughfares reduced to rubble. this is the very same seoul street nearly 60 years later. it has been a remarkable transformation from being an international battlefield. south korea literally rose from the ashes, transforming itself from one of the world's poorest countries to one of the richest. and the transforming is still going on. seoul is a city of continuous

construction, spending the money that flowed in from the high- tech korean brands that have gone global. it means south korea has experienced opposite ends of the wealth spectrum all in the space of a generation. wein the 1960's and 1950's, received development aid from other countries. we want to give the to other communities, what we have received. >> are there lessons for the developing world in what you have managed to achieve, particularly in the last 20 years? >> if i may highlight one element relevant to other countries, then it is that the best investment is in people. >> people like this, students at one of seoul's most prestigious universities. from an early age, they have been expected to achieve. >> tell me what it is like when you are trying to get into university.

this 23-year-old told me of his experience. >> university is very important to your career. we are preparing at university. >> for him, the pressure meant taking that notoriously difficult entrance exam three times until he had the right grades. in a system that places a premium on education, for him, it has been worth it. the pressure on south koreans does not end with their education. this is a wealthy society enjoying everything that modern life has to offer, but it is also a society with the highest suicide rate in the developing world. the evidence is that as the country got richer, the suicide rate went up. here and -- at seoul's main cathedral, they are trying to help. the catholic groups help people.

their help line takes calls from people who feel they have no one to turn to. >> when you are in a poor country, we were happy because we lived all the time with our family members, and we could share all the things with them, but after the industrialization, everything was changing, so everyone goes to their office, their own office, and no one cares for another. >> it is the high-pressure, fast-moving society, but try telling that to those stocks in seoul -- stuck in seoul traffic, facing a grueling and to their work day. this is a society proud to host the g-20, but also aware that the pace of change has come at a price for its people. >> so-called rare earth, vital elements in the manufacture of many high-tech goods like cell phones and hybrid cars, but

china has a monopoly on the supply. japan is a major customer, but shipments have stopped in the past month after a row between the two countries after a chinese trawler captain was arrested. china denies any embargo as being a force. -- in force. >> they are the elements that make the modern world possible. rare earth, used in the technology that surrounds us all -- televisions, mobile phones, and hybrid cars. >> this is original rare earth ore. >> but china has a near monopoly on supply, and traders in japan have seen shipments dry up as a territorial dispute between the countries began. >> already, how long? more than one month. nearly two months will pass, and not yet coming any closer to

even one kilo of the rare material. >> that is bad news for japan's factories. the country sees its future in making gadgets to help the world go green, technology that needs lots of rare earth, so japan is looking for its own supplies. once people said there used -- their computers in to be recycled. they call this urban mining. this place works on the principle that yesterday's must obsolete gel.y's look at this -- a sega megadrive. these are computer monitors. these are old pc's. out of date. who wants an electric typewriter these days? let alone a cassette deck.

inside all these old machines is a valuable raw material that could be used to fuel japan's industry again. computers are the first to be prised apart. it is the hard drives they are after. the magnets inside contain rare earth and can be used again. >> i think we can recycle what we have in japan domestically. we do have plenty of rare earths in so-called urban -, so if we are able to recycle it, we do not have to rely on imports -- we have plenty of rare earth in so-called urban mines. >> japan's demand is growing every year. they are searching for ways to make industry more efficient, using lasers to get down to the level of the atom, exposing the structure of metals. what are we looking at here?

what is this machine? >> we are looking at at some -- at atom distribution. >> the goal -- to make things like hybrid cars using less rare earth. >> we started this about seven years ago. at the time, nobody showed much attention to our work. people did not realize the problem would be so serious like we are facing right now. >> what do people think about your work now? are they team that you finish as quickly as possible -- are they keen that you finish as quickly as possible? >> yes, they are very keen. >> japan needs answers to its supply problems soon. the country's industries could soon grind to a halt. >> the harry potter series of blockbuster's about a school for wizards has been in our cinema's for almost a decade, but that is all coming to a close.

the seventh and last but one installment has its world premiere in london on thursday. they are are -- >> coming. they are coming. >> this is the start of the final story in the saga, divided into two films. part one, released this month. part two next year. not quite the end, but the beginning of the end for the movie's young stars, who finally finished filming earlier this year and who all carry fond memories of the 10 years spent making the series. >> it has been immensely happy for most of it. i really enjoyed working with everyone i had a chance to work with. i was given this mind blowing opportunity at the age of 11 to not just work with these amazing actors but have the chance to learn on the job. >> what were the emotions when they finally called "cut" on

that last day? >> it was overwhelming. it just felt like the end of a world, a world of mine. >> we finished filming a few months ago, and it has been weird. has been hard to adjust, really, because it has been such a huge part of my life. >> what is it? what is it? >> well, it is the sign of the deadly -- deathly hallows, of course. >> most of the films have been set at school, but hogwarts does not feature in this bill at all, giving it a different field. >> it has a totally different field. a lot of that is because we are

not in those familiar corridors of hogwarts. >> they look back on the last decade as a positive and life changing experience. >> it is weird, but i am kind of ready to move on. >> i'm excited to go -- to move on. it has been 10 years, and i'm excited to see what the world has in store for me next. i'mt is something that' immensely proud to be a part of, but 10 years is a long time. i'm ready to walk away. >> no doubt, and millions of fans will find the final end to the potter films as emotional and moving as daniel, >> -- daniel, emma, and rupert have. >> more news when you want it on

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