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)