The cashless economy: Who are the winners and losers in the worldwide shift to digital payments?Rob Young hears from a grumpy pensioner in Sweden, a country that has blazed the way in ditching physical currency, as well as a Swedish expert on payment systems, Professor Niklas Arvidsson. Plus what difference has Narendra Modi's "demonetisation" policy of banning large denomination notes made to India's economy? Monika Halan, consulting editor at Indian financial newspaper Mint, gives her considered opinion. Meanwhile Rahul Tandon explains why Indians still don't know what Bitcoin is, even though they know they like it.(Picture: Indian farmer with daughter using mobile phone and credit card for online payment; Credit: triloks/Getty Images)

Ethiopia's economic growth has been hailed as a miracle by some, but it is a country deeply divided along the lines of ethnicity and wealth, and in recent years has been wracked by violence.New Prime Minister Abiy Ahmed has made a public apology to the hundreds who have died and hundreds of thousands displaced, but will his words be enough to bring harmony?We hear from an Ethiopian medical student who fled to Yemen several months ago for fear of persecution, and ask Dr Awol Allo, a human rights lawyer and émigré from Ethiopia, about the reasons for the conflict, which prompted the government to declare a national state of emergency earlier this year. Ed Butler also visits a Chinese-built shoe factory south of the capital Addis Ababa to hear about pay and working conditions.Plus, what has been the international business reaction to the unrest? Has it deterred investment? We speak to Arusha Mehta, from clothing firm Goldmark Ltd, William Attwell from Frontier Strategy Group, and Zemenedeh Negatu, the Ethiopian-American chairman of the Fairfax Africa Fund, which invests heavily in the country. (Picture: A protest against government crackdowns in the Oromo and Amhara regions of Ethiopia. Credit: Gulshan Khan,Getty Images)

As shares tumble and talk of regulation increases, we ask whether Facebook, Google and Amazon are facing a crisis.High-profile data breaches, falling user numbers and presidential questions over tax affairs have upped the pressure on these corporate giants in recent weeks. Bilal Hafeez, from the Japanese investment bank Nomura, tells us why he thinks their tech bubble is bursting.Another troubled tech firm, Uber, is under pressure once again - Jeremy Wagstaff tells us that this time it is from rivals in Southeast Asia. Plus, we take to the skies with real-life Iron Man Richard Browning, founder of tech start-up Gravity, who has set a world record in his jet-powered suit.(Picture: A man holding a smartphone showing Facebook's logo. Credit: Kirill Kudryavtsev, Getty Images.)

Does the world face a food crisis in the next 10 years? Or could the solution to world hunger already be at hand? Laurence Knight explores whether technological solutions like multi-storey indoor farms and self-driving tractors could help provide affordable food for everyone. Producer: Laurence Knight(Photo: Greens growing on floating beds. Credit: Mira Oberman/AFP/Getty Images)

Africa has the youngest population of any continent in the world and that figure is expected to double in less than 30 years. The BBC's Tamasin Ford travels across three countries to hear from young people about their hopes and dreams for their working lives. In Ghana, she talks to award winning actor and producer Yvonne Nelson. In Ivory Coast Tamasin hears from Edith Brou, CEO of her own Digital Agency, the Africa Content Group. And in Liberia, young people tell Tamasin about their hopes for the future in a country where youth unemployment is very high amongst the sixty percent of the population who are under 25.(Photo; Young men on the streets of Monrovia, Liberia. Credit: Tamasin Ford)

As the country prepares for elections, Ed Butler visits Sierra Leone to find out how people are feeling about the economy as it fights back following the devastating Ebola outbreak. Ed speaks to top politicians and also hears from ordinary people struggling to make a living. And he asks what happened to money donated to deal with Ebola victims, amid reports of corruption.(Picture: Children attending school on November 15, 2017 at the Old Skool Camp. Credit:SAIDU BAH/AFP/Getty Images)

Business Daily hears remarkable stories from Yemen's civil war. The tens of thousands of African economic migrants risking everything each year to travel into the world's worst humanitarian crisis. And the man who decided to start a coffee export business out of the very heart of the war-zone. Ed Butler talks to Mokhtar Alkhanshali from the Port of Mokha coffee company, humanitarian worker Rabih Sarieddine at the International Organization for Migration's office in the Yemeni port of Aden and journalist Iona Craig who's been reporting on Yemen for many years. The programme contains descriptions of kidnapping and violence. (picture: Yemeni tribesmen from the Popular Resistance Committees, keep watch at Nihm district, on the eastern edges of the capital Sanaa, on February 2, 2018. (Credit ABDULLAH AL-QADRY/AFP/Getty Images)

Are you saving for a rainy day? Eight of the world's major economies will between them have a joint shortfall of some $400 trillion in the next thirty years in terms of pension provision, according to the World Economic Forum. The assumption here is that most of us need about 70% of our working income to get by in our retirement years. But the shortfall they've come up with is a staggering 5 times the size of global stock markets. Luckily, Dan Ariely, a behavioural economist based at Duke University in the US, has been studying some of the simple human tricks that perhaps might nudge us towards a more prudent attitude.(Picture: Getty images)

US President Donald Trump has pledged a major upgrade to the country's nuclear deterrent, but are a handful of private defence contractors driving the multi-billion dollar modernisation programme?Jonathan King, a veteran campaigner against nuclear proliferation and professor at MIT, argues guaranteed profit margins and secrecy make the industry very attractive to such companies.But Hawk Carlisle, chief executive of the US National Defense Industrial Association, tells Ed Butler the private sector is the only area capable of building such weapons and that there is adequate competition and government scrutiny.Plus, how complicated is it to make a bomb these days? Robert Kelley, a former weapons inspector in Iraq, says technology is advancing so fast that it's getting easier and easier.Producer: Laurence Knight(Picture: Ballistic missiles being launched in North Korea. Credit: AFP photo/KCNA via KNS, Getty Images)

We predict and discuss the biggest business and economic trends of the coming year. Have we failed at handling globalisation, and how can we deal with it in the coming year? The Nobel prize winner Joseph Stiglitz tells us how the global economy can thrive without the failings of globalisation which we have seen so far - and advises us on how to handle the increasing tendency towards interdependence between countries.And the BBC's Rahul Tandon hears the woes of street market sellers in India. Hawkers sell their products at a much cheaper price than many other retailers - but at what cost to the country and society? We look at the role of the open market seller in an increasingly regulated economy.Plus, we take a look at what's in store for global stock exchanges and industries with experts Stephanie Hare, an independent political risk analyst, and Gabriel Sterne from Oxford Economics.(Image: Reflection of Jubilee Bridge and Central Business District of Singapore during dusk hour in a glass ball. Credit: Getty Images)

There's been another round of revelations from the Paradise Papers - the leaked documents from a big offshore law firm. The leaks put Apple's tax affairs under scrutiny. The company shopped around for a tax haven after a crackdown on its controversial tax practices in Ireland. The BBC's Andrew Walker explains the background and Manuela Saragosa asks tax specialist Rita de la Feria, professor of tax law at the University of Leeds, whether it is possible to create a level playing field for tax globally. Also in the programme: Daniel Gallas reports from Brazil two years after the country's worst ever environmental accident. On November 5th 2015, a dam operated by the iron ore company Samarco - a joint venture between commodity giants Vale and BHP Biliton - burst in the town of Mariana. Two years on, has the region's economy recovered? (Picture: The Apple logo is displayed on the exterior of an Apple Store in San Francisco. Credit: Getty Images)

A huge new leak of financial documents has revealed how the powerful and ultra-wealthy, including the British Queen's private estate, secretly invest vast amounts of cash in offshore tax havens. Donald Trump's commerce secretary is shown to have a stake in a firm dealing with Russians sanctioned by the US. The leak, dubbed the Paradise Papers, contains 13.4m documents, mostly from one leading firm in offshore finance. Manuela Saragosa hears more from the BBC's Dominic O'Connell. Also in the programme we hear from the Premier of Bermuda David Burt and the Secretary General of the OECD OECD - and its secretary general Angel Gurria.

We explore the anxieties of the wealthy, and the mentality of conspicuous consumption, which is about more than being discreet about high-end purchases. Journalist Rachel Sherman tells us her accounts of interviewing some of New York's elite wealthy - who are equally as stealthy about their endeavours and purchases. We hear more about the anxiety associated with wealth, both earned and inherited, including the constant need to seem 'normal', and justify funds. Stephen Lussier, a chief executive from diamond company De Beers, tells us about the changing buying habits of some of the world's richest - including the increasing number of women who prefer to buy their own diamonds for reasons other than romance. Plus, extravagant signs of wealth are at their peak during India;s wedding season. Weddings can go on for days, and include thousands of guests and private chartered planes, and over 70 types of food. The BBC's Rahul Tandon reports that some Indian states are cracking down on what they say are 'excessive' affairs. (Image: A wealthy man anxiously facing a City landscape. Credit: Coldsnowstorm/ Getty Images)

The path to a profitable business could lie in your ability to be nice. From The Empathy Business, Belinda Parmar OBE tells us that some understanding between leaders and customers, and within teams, has proven to lead to sharp rises in profits.And some people throw billions in to the business of being compassionate, and can turn huge profits. We speak to the founder of LeapFrog Investments, Andy Kuper, whose business invests in fast-growing companies that bring about serious change to the world and to shareholders. His projects include the world's first insurer to give life cover to HIV positive people across Africa.(Image: A black and white photo English airline entrepreneur Freddie Laker (1922 - 2006) giving a thumbs up gesture and smiling; plane in background. (Photo by London Express/Hulton Archive/Getty Images)

In times of economic crunch, where should you store your savings? Perhaps you are tempted by the rise in value of bitcoin. But can it last? And what is bitcoin anyway? A currency or an asset? Garrick Hileman, Research fellow at the Cambridge centre for alternative finance, tells the BBC's Manuela Saragosa what to make of the cryptocurrency.British business couple Baroness Michelle Mone and Doug Barrowman tell Ed Butler about their property development where units will be sold for bitcoin.And Martin Arnold, an analyst at London investment firm ETF Securities, weighs it up against other assets, like the safe haven of gold.(Picture: bars of gold. Credit: Getty.)

Will robots and artificial intelligence help us in our daily lives, or steal our jobs and discriminate against us? Manuela Saragosa talks to Max Tegmark, who has just written a book about what it means to be human in an age of artificial intelligence. In it he recounts how he was left in tears after a recent visit to London's Science Museum. She also interviews Noel Sharkey, professor of artificial intelligence and robots at the University of Sheffield.And regular commentator James Srodes has a warning about letting computers make decisions for us.(Photo: Model robots. Credit: Getty Images)

Texas has undergone an energy revolution, and even has its own power grid to service the vast State’s needs, but while some claim renewables are the future, others are staunch supporters of oil and gas. How do the two sides fit together? Joe Miller speaks to Jim Briggs, deputy City Manager in Georgetown, which despite its Republican politics, has gone 100% renewable. He also hears from author Kate Galbriath, about how wind energy has a long history in Texas and has sat side by side with oil for decades. Joe also hears from ERCOT, the Texas energy grid, about how they manage supply and demand, and from Fred Beach an energy policy expert from the University of Austin about the motivation for the switch to renewables in places like Georgetown.(Photo: Georgetown Town Square. Credit: City of Georgetown)

India's financial shock therapy continues, this time with an all-new tax system. The BBC's Rahul Tandon reports on its progress. Presenter Ed Butler speaks about the new plan with businessman Gaurav Daga, founder of plastics supply company Oswal Cable, near New Delhi.And Simon Ruda, the director of home affairs and international programmes at the Behavioural Insights Team in London, also known as the Nudge Unit, says getting people to pay tax isn't as simple as it might seem.(Photo: India flag. Credit: Getty Images)

How can refugees improve their lot? There are about 65 million displaced people in the world, according to the UN. And as many flee their places of birth for the long term, they need work to support themselves and for a sense of purpose.The BBC's Jane Wakefield talks to urban refugee worker Robert Hakiza, who escaped violence in Congo to live in Kampala, Uganda. She also hears about an innovative new system to find out where you are. Chris Sheldrick explains how What 3 Words, his company, can help.And Dale Gavlak reports on a new scheme to get Syrian refugees into work from Jordan's Zaatari refugee camp.(Picture: An immigrant worker cutting paving stone on wood. Credit: Getty.)

Are most countries' policies on drugs irrational? From the tolerance of Holland and decriminalisation in Portugal to the Philippines, where President Rodrigo Duterte's crackdown on drug users and dealers has claimed thousands of lives, there is little international consensus.Presenter Manuela Saragosa speaks to David Nutt, professor of Neuropsychopharmacology at Imperial College London, who says some drugs are less harmful than alcohol.She also speaks to Joao Goulao, one of the architects of Portugal's decriminalisation policy.And, the BBC's Anna Holligan reports on the rise of nitrous oxide, or laughing gas, in Holland.(Photo: A woman contemplating pills. Credit: Getty Images)

As the world's central bankers meet for their summer retreat in Jackson Hole, Wyoming, what will be on their minds? Perhaps it will be their $18tn balance sheets, and all the extra cash they created as a consequence, argues author and policy analyst Pippa Malmgren.The BBC's Joe Miller has been finding out how Frankfurt might cope with a sudden influx of bankers, should the world's lenders choose it as their new European home.Air India has recently decided to offer only vegetarian food to those travelling inside India in economy class. Rahul Tandon does that quite a lot, and he says the airline's move has got him thinking.(Photo: Coins stacked on each other in different positions. Credit: Getty Images)

They're everywhere, but can businesses actually make any money out of them?The programme includes Jeremy Burge, who has developed an Emojipedia business that catalogues the nearly 3,000 existing emoticons, Su Burtner, who successfully got a new cricket emoji accepted, and Keith Broni, the world's first emoji translator at Today Translations, guiding businesses through the shifting quagmire of emoji meanings. Ed Butler presents.(Picture: Smiley emoji and poo emoji; Credit: denisgorelkin/Getty Images)

We ask if patients are being prescribed too many medicines. Confusion and lack of research, says one physician, can be a culprit in some cases where patients are handed prescriptions for medicines which are not necessary for the improvement of their overall health. Commercial influence from pharmaceutical businesses is seen as another factor in overmedication - so we speak to a representative from the pharmaceutical industry about who is responsible for educating patients and doctors about medicines, and how information can be improved. Also, 'the pill' could be a thing of the past, as an app called Natural Cycles becomes approved for use as a contraceptive - using body temperature to see when a woman is most fertile.(Image: Contraceptive pills. Credit: Philippe Huguen / AFP / Getty Images)

Household debt is at record levels as US consumers spend, spend and spend some more. And with America's interest rates set to rise again, could there be trouble ahead?Former Federal Reserve governor Randy Kroszner tells presenter Manuela Saragosa that watching the debt problem get fixed will be like "watching paint dry" - but that it is a deliberately slow process, to avoid shocks to consumers.We hear from retirees in the US who are struggling with debt - and one expert who says that the current workforce may not be able to rely on their pensions when they retire.Also in the programme, Ryan Holmes, the chief executive and founder of social media managing software, Hootsuite, gives his take on whether a company can survive these days without a presence on social media.(Image: Credit cards in a wallet. Credit: Getty Images Staff)

Military tensions between the United States and North Korea seem to rise on an almost daily basis. But how important are economic factors in putting pressure on the North Korean state? Could China, with its close trading relationship, choose to shut down North Korea - putting pressure on the leadership there? The BBC's Danny Vincent travels to the border between China and North Korea to look at some of the trade passing between the two nations. And Ed Butler talks to Korea Expert Aidan Foster-Carter and asks him whether China could shut down North Korea if it chose to do so?Also, our veteran commentator Lucy Kellaway admits that she does not always learn from experience.(Picture: A North Korean man standing at a border fence next to the Yalu river, opposite the Chinese border city of Dandong. Credit: JOHANNES EISELE/AFP/Getty Images)

Japan's workforce is shrinking due to an ageing population and a policy of very low immigration. But though the world's third largest economy needs workers, the government isn't keen on immigration when it comes to filling lower-skilled jobs. A loophole in the rules, however, means every year about 200,000 labourers from overseas go to Japan on its guest worker trainee scheme. Arranged through a network of brokers in countries such as China and Vietnam, workers often find themselves underpaid, and the US State Department categorises the scheme as human trafficking, and points to mass exploitation. Edwin Lane investigates in Tokyo and Gifu, meeting workers from China who are stuck in Japan fighting for their wages, and to lawyers and politicians about what can be done, and asks why Japan is so hesitant to open its borders to more foreigners.(Image: Tokyo's Akihabara district.Credit: Chris McGrath/ Getty Images)

Social scientists, technologists, and politicians from across the political spectrum think they have a potential solution to the unemployment that automation and artificial intelligence are expected to create. It's called a universal basic income. And it involves getting the state to pay a fixed sum to all of its citizens, whether or not they have a job. The Canadian province of Ontario has become the latest to announce a trial - for 4,000 households. We hear from Finland where a basic income pilot project is already underway. And Manuela Saragosa talks to Guy Standing, co- founder and co-president of the Basic Income Earth Network - who is advising a number of pilot projects around the world.(Picture: Five pound sterling note, London 2017. Credit: DANIEL LEAL-OLIVAS/AFP/Getty Images)

Machines are about to get a lot smarter and machine learning will transform our lives. So says a report by the Royal Society in the UK, a fellowship of many of the world's most eminent scientists. Machine learning is a form of artificial intelligence that's already being used to tag people in photos, to interpret voice commands and to help internet retailers to make recommendations.Manuela Saragosa hears about a new technology that is set to revolutionise computing, developed by a UK company called Graphcore. Manuela talks to Graphcore's chief executive Nigel Toon, who is taking on the AI giants.And Manuela hears how we are 'bleeding data' all the time. Dr Joanna Bryson from the University of Bath and professor Amanda Chessell, an IBM distinguished engineer and master inventor, explain how our data is being used.Producer: Laurence Knight(Photo: A robot pours popcorn from a cooking pot into a bowl at the Institute for Artificial Intelligence (AI), University of Bremen, Germany. March 2017. Credit: Ingo Wagner/AFP/Getty Images)

The British Prime Minister Theresa May is proposing a general election for 8 June- and it will be a poll all about Brexit. Mrs May says political divisions are risking Britain's ability to make a success of its departure from the European Union. So will the result of the poll give the prime minister a firm mandate in her negotiations with the EU, and perhaps help her to wangle a better Brexit deal? Manuela Saragosa talks to the BBC's Dominic O'Connell who has been gauging opinion amongst business leaders, including Sir Martin Sorrell, chief executive of advertising giant WPP. And the ethics of digital design. Are we unable to tear ourselves away from computers and TV because we are weak - or because the digital designers are manipulating us unfairly?(Photo: British Prime Minister Theresa May. Credit: Getty Images)

Tensions in the Middle East and protests in Russia are not just caused by internal politics and war but also, some say, the stresses of economic decline as the result of cheap oil. While the price of oil has gone up this week in response to the US military's missile attack on a Syrian government airbase, this uptick is likely, many analysts say, to be short-lived. Some experts now believe the price of oil could remain low forever. That's the view of Dieter Helm, an economics professor at the University of Oxford, who has just written a book, entitled Burn Out. Ed Butler asks Professor Helm to lay out the possible effects of a permanently lower oil price.Also in the programme, the BBC's Phil Mercer reports from Australia where renewable energy is on the rise. More homeowners are installing solar power battery systems to guarantee that the lights stay on.(Picture: A Russian LUKOIL oil platform. Credit: MIKHAIL MORDASOV/AFP/Getty Images)

A secret recording that implicates the Bank of England in Libor rigging has been uncovered by the BBC . The 2008 recording adds to evidence the central bank repeatedly pressured commercial banks during the financial crisis to push their Libor rates down. Libor is the rate at which banks lend to each other, setting a benchmark for mortgages and loans for ordinary customers. The Bank of England said Libor was not regulated in the UK at the time. Ed Butler hears more from the BBC's economics correspondent, Andy Verity.Also in the programme, we hear from our Business editor, Simon Jack, about evidence the BBC has seen that top executives at the oil company, Shell, knew money paid to the Nigerian government for a vast oil field would be passed to a convicted money-launderer. The deal was concluded while Shell was operating under a probation order for a separate corruption case in Nigeria. Shell said it did not believe its employees acted illegally. And finally, our regular commentator Lucy Kellaway disapproves of the advice given publicly by one US corporate boss to her growing children.(Picture: The Bank of England in central London, England. Credit: Daniel Berehulak/Getty Images)

The investigation into the hacking of Democratic National Committee computers during the US election campaign continues to haunt international politics. Was Russia responsible for the hack? The US Secret Services say this is now beyond doubt. Just before he left office President Obama hit back with a series of retaliatory measures against Russia. Those measures included a range of sanctions against institutions and people: two intelligence agencies, four senior intelligence officials, 35 diplomats, three tech companies. They also targeted a man who was infamous in tech security circles. His trade name is Slavik. Ed Butler hears the remarkable story behind Slavik's years spent attacking and compromising the servers of international banks and what it all reveals about Russian cyber-espionage.(Picture: An employee walking behind a glass wall with machine coding symbols at the headquarters of Internet security giant Kaspersky in Moscow. Credit: KIRILL KUDRYAVTSEV/AFP/Getty Images)

As President Trump prepares for key talks with China's President Xi Jinping, we hear from the editor of the Financial Times, Lionel Barber, who warns that Mr Trump is threatening to go it alone in tackling North Korea, if Beijing refuses to help. Fresh from an interview with Donald Trump in the Oval Office, Mr Barber tells Ed Butler that there is cause to be concerned about the risk of US military action against North Korea. Ed also hears what to expect from the US-China trade discussions this week, with Peter Trubowitz, director of the US Centre at the London School of Economics. And Jennifer Pak reports from Shenzhen in Southern China on the Chinese 'makers', coming up with new ideas (not stolen ones). And Lucy Kellaway says sexism is never acceptable, no matter how old you are.(Picture: North Korean leader Kim Jong-un, impersonated by Hong Kong actor Howard, and US President Donald Trump, impersonated by US actor Dennis, pose outside the US consulate in Hong Kong on in January 2017. Credit:ANTHONY WALLACE/AFP/Getty Images)

Manuela Saragosa investigates how we should age. We're all living much longer yet we live in a world that prizes youth and productivity above all. So, we're asking how to age? For many of us it will mean working beyond the usual retirement age. Manuela hears from those who argue that's something to welcome, not dread. Including 97-year-old athlete, oarsman, writer and former dentist Charles Eugster. Also in the programme: Lynda Gratton, co-author of The 100-year life and Aubrey de Grey, a British researcher on aging who claims he has drawn a roadmap to defeat biological aging and that the first human beings who will live to 1,000 years old have already been born. (Photo: Charles Eugster at the Henley Royal Regatta. Credit: Getty Images)

Russia's economy became mired in sanctions back in 2014. First it was those from the West as a result of Russia's involvement in the Ukraine conflict. Then, exactly two years ago this week, Russia fired back with sanctions of its own. The idea was partly to boost domestic agriculture by replacing foreign imports with Russian ones. It has helped some local cheese-makers. But many consumers are not happy with the loss of foreign goods and general spike in food prices. We also look at the wider economic crash in Russia's economy, with the help of two experts - Alex Nice, an analyst with the Economics Intelligence Unit, and Bill Browder, CEO and a co-founder of the investment fund, Hermitage Capital Management. He was once Russia's most prominent foreign investor before falling out with President Vladimir Putin, and fleeing into exile in 2006. He is doubtful about any predictions of an economic recovery in Russia, as long as the current government remains in power.(Photo: Vladimir Putin depicted on a traditional Russian doll. Credit: Getty Images)

What happens when you abandon consumerism? The BBC's Ed Butler talks to Pete Adeney, also known as Mr Money Moustache. He retired at 30 and is so frugal he thinks he will never have to work again. Plus, we go urban foraging in London, and a Danish food campaigner tells us what we should do about all that unwanted food left at the back of the freezer.(Photo: A woman sews buttons in Mumbai. Credit: STRDEL/AFP/Getty Images)

One farmer suffering from the drought in Australia tells BBC Business Daily that it looks "like a lunar landscape", with the ground crackling under his feet. We look at how much the weather conditions have damaged the country's economy. And since the thaw with the US, Cuba is now enjoying a tourist boom - but the country can't keep up with the influx of new visitors - meaning some tourists have ended up sleeping in open squares. (Picture: Cracked land in drought. Credit: Getty Images)

Sugar tax is the hot topic that has got governments, health campaigners and the food industry talking. As rates of obesity and type 2 diabetes rise in many parts of the world, some say taxes on sugary drinks are a simple way of encouraging healthier choices. But should governments make those kinds of judgements? Katy Watson in Mexico and the US, meets those who think a 'sin tax' is the best way forward for fast food and fizzy drinks. She asks Mexico’s government and drinks industry how their sugar tax has affected sales of the products subject to extra tax. And, she hears from food industry lobbysists and those who think that government has no role to play in our food choices.

Is migration a good thing for economies? Does it bring innovation? Or does it drain resources? We have both sides of the argument as we hear Mark Krikorian, executive director of the Center for Immigration Studies in Washington, debate the matter with Jonathan Portes, director of the National Institute of Economic and Social Research in London. Plus, our reporter Vishala Sri Pathma reports on India's Nestle Maggi instant noodle food scare and how it's affected attitudes towards food in the country. (Picture: Migrant families leaving a transit area in Macedonia; Credit: Dan Kitwood/Getty Images)

As China shows off its military muscle in a parade commemorating victory over Japan in World War Two, we examine what lies behind this dazzling display of hardware. China's defence budget has doubled over the last decade, and some of its neighbours are worried. We ask defence analyst, Michael Caffrey of IHS Jane's, whether the numbers are a cause for concern. Also in the programme, as part of the BBC's India season, we hear from Kolkata where millions of Muslims continue to struggle for equal rights in the jobs market. The government is promising tougher action to redress the prejudices against them. And as Azerbaijan this week jails one of its leading investigative journalists and anti-corruption activists, Khadija Ismayilova, we hear her recent assessment of the way economic and political power have been centralised in the hands of the ruling family of President Aliyev. What's really going on in the oil-rich country? Is there an oil curse in Azerbaijan and should this affect international attitudes towards it? We speak to Barnaby Pace of the campaign group Global Witness, who has conducted his own research into who really controls Azerbaijan's oil wealth. (Picture: Chinese soldiers ride armoured vehicles in the Tiananmen Square military parade; Credit: Kevin Frayer/Getty Images)

Women make up a comparatively small proportion of India's formal labour force. Those that do work tend to be at the extremes of the social spectrum - either poor or highly educated. Why are there not more middle class women working? We hear the stories of a maid and doctor in Delhi, and speak to the newspaper columnist Kalpana Sharma about the cultural and societal factors that are keeping millions of women out of formal employment. Plus the BBC's Katy Watson shows us how women in Latin America and the Middle East also struggle to just get on with their working lives.

China's latest factory data is the worst in 3 years. What's wrong with China's business model? Mark Anderson is CEO of InventIP, a consortium of US companies and experts who've put together a report, claiming that some 50% of Chinese growth in recent decades has been founded on the stealing of western business ideas, via old-fashioned industrial espionage and more sophisticated state-sponsored hacking. He exclusively tells the BBC the basis for his claims. And we also hear from Chinese author Edward Tse, who says the old stereotypes of Chinese companies leeching off western technology and possessing few ideas of their own is outdated. He's spent years advising Chinese companies, and in a new book, China's Disrupters, he claims a new genuinely entrepreneurial and innovative spirit has transformed the country's business climate.

These powerful chemicals are essential to obtain the minerals that build our world, the fertilisers that feed the planet, and the fuels that propel our vehicles - as presenter Laurence Knight discovers on a trip to the Ineos Grangemouth oil refinery in Scotland. But while most traditional acids are based on the power of hydrogen ions, Prof Andrea Sella of University College London explains that many modern industrial "acids" do not, and come in startlingly unexpected forms such as powders. Many of the most corrosive acids are very tricky to contain, resulting in the occasional nasty accident, as chemical engineer Keith Plumb explains. Also, Justin Rowlatt has a report on acid attacks in southern Asia in which he speaks to campaigner Selina Ahmed of the Acid Survivors Foundation on how Bangladesh has tackled the problem. (Picture: A team working with toxic acids and chemicals secures a chemical cargo train tanks crashed near Sofia, Bulgaria; Credit: Cylonphoto/Thinkstock)

Iron is the chemical element at the heart of steel, and by extension of industrialisation, so what does the collapse in iron ore prices say about the economic progress of China and India? In the last of three programmes looking at this most abundant of metals, Justin Rowlatt asks whether the steel-making party is over, or whether a new one is just about to begin. And if, one day, humanity can stop digging this element up altogether. To find the answers, he speaks to material flow analyst Prof Daniel Beat Muller, sceptical China economist Andy Xie, Andrew Harding of the world's second biggest iron ore miner Rio Tinto, and Ravi Uppal who heads Jindal Steel of India.

Iron and manganese are the two key ingredients that enabled the mass production of steel - one of the most versatile and complex materials known to humanity. Justin Rowlatt chews on salad leaves with Andrea Sella of University College London, who explains how manganese is present in all plants and plays a key part in photosynthesis and ultimately oxygen production.He also travels to Sheffield to visit a modern steelworks - the specialist engineering steel-maker Forgemasters - where Peter Birtles and Mark Tomlinson give a taste of just how hard it is to produce unbreakable parts for nuclear power stations and oil rigs.

Justin Rowlatt explores two moments in history that transformed this most abundant of metal elements into the key material out of which modern life is constructed.In the first of three programmes, Justin travels to St Paul's Cathedral, where professor Andrea Sella of University College London recounts why Christopher Wren was so vexed that the new railings were built out of cast iron. Then onto Ironbridge, where curator John Challen tells how the world's first major iron structure came into being. And, Justin ends at Cyfarthfa in Wales, once home to the world's biggest ironworks, where historian Chris Evans explains why puddling and rolling are far more world-changing than they sound.

Technetium is essential for medical imaging, yet supplies of this short-lived radioactive manmade element are far from guaranteed. Justin Rowlatt heads to University College London Hospital to see a technetium scan in progress, to view the clean rooms where technetium cows are milked, and to speak to nuclear medicine researcher Dr Kerstin Sander about a possible solution to cancer.Professor Andrea Sella explains why this element sparked a 70-year wild goose chase by chemists in the 19th Century. And, we dispatch Matt Wells to Winnipeg in Canada to meet the team hoping to come up with an alternative source of technetium, when the biggest current source - the Chalk River reactor in Ontario - shuts down in 2016.

Fluorine is a ferocious yellow gas that is the key building block for a string of other gases that pose a threat to mankind if released into the atmosphere. From the ozone-depleting CFCs (Chlorofluorocarbons) to potent greenhouse gases such as sulphur hexafluoride, Justin Rowlatt gets the full rundown from professor Andrea Sella of University College London.Justin travels to the source of fluorine in Britain, a fluorspar mine in Derbyshire, before following the ore to the giant acid works of Mexichem in Runcorn in the UK, where site director Ron Roscher explains the incredible array of uses for this chemical element.And, he also hears from environmental scientist Stefan Reimann about the environmental legacy of CFCs and the threat posed by Chinese and Indian air conditioners.

Chromium: Justin Rowlatt visits the Warrs Harley dealership to find out from Professor Andrea Sella why this metallic element links the motorbikes on show, with the leather jackets and flick-knives of the archetypal biker gang. He hears from Erin Brockovich about the insidious role hexavalent chromium has played in drinking water and human health. And he travels to the luxury Savoy hotel in London, and the Harry Brearley memorial on a dingy post-industrial corner of Sheffield, to discover crucial role chromium plays in stainless steel.