Isabel dos Santos faces charges in her native Angola. The daughter of the former long-time president is accused of corruption after a leak of documents. Ed Cropley, former Reuters sub-Saharan Africa bureau chief, discusses what could happen next. Mark Hays from the campaign group Global Witness explains why the role of international banks and accountants in the scandal shouldn't be a surprise. Tom Keatinge from the Royal United Services Institute, a think tank, argues that countries like the UK have made some progress in tackling money laundering.

(Photo: Isabel dos Santos in 2018, Credit: Getty Images)

Why don't more manufacturers embrace the principles of the circular economy? It's a pertinent question, given the dire state of the recycling industry.

Manuela Saragosa speaks to one company that has already implemented the principles of the circular economy. Cardboard box manufacturer DS Smith tracks its products throughout their life, and can reuse the fibres they contain up to 25 times, according to the firm's sustainability lead, Sam Jones.

So why don't more manufacturers do the same? Manuela speaks to circular economy expert Alexandre Lemille, Jarkko Havas of the Ellen MacArthur Foundation, and Josephine von Mitschke-Collande of EIT Climate-KIC in Switzerland.

(Picture: Old plastic water bottle on a beach; Credit: s-c-s/Getty Images)

Katie Prescott revisits the efforts of the Zanzibar government to chart its territory by flying drones across the African spice island.

A year ago she met planning minister Mohammed Juma, the brains behind this ambitious project that aims to clarify land property rights, provide information to local residents about the location of services and amenities, and help the government plan everything from flood management to urban redevelopment.

Katie catches up with Edward Anderson of the World Bank, who headed up the drone mapping project, to find out how the data they have gathered is now being crunched by artificial intelligence algorithms, and being made available to the public.

Producer: Sarah Treanor

(Picture: Aerial view of Zanzibar beach; Credit: den-belitsky/Getty Images)

How strikes and protests affect the economies of major cities. Will Bain visits Paris to see how strikes on the transport network are affecting local businesses, while Ed Butler speaks to author and former Hong Kong civil servant Rachel Cartland about the economic impact of anti-China protests in the region.

(Photo: Protests against the policies of French president Emmanuel Macron in Paris in January, Credit: Getty Images)

The monitoring of employees in the workplace is becoming commonplace. Ed Butler speaks to Sean Petterson, boss of StrongArm Technologies, a company that monitors construction and warehouse workers to reduce workplace accidents. Griff Ferris from the anti-surveillance campaign group Big Brother Watch explains why workplace monitoring could be imposed without employees' consent. Brian Kropp from the advisory firm Gartner questions the value of all the data being generated by monitoring technology.

(Photo credit: Getty Images)

Modern tech is accused of interfering with our sleep, keeping us up late anxiously staring at our phone screens. But could a phone app provide the cure?

Roughly one in three people in most developed countries typically tell surveys that the suffer from insomnia. The BBC's Laurence Knight is one of them. He seeks the advice of sleep physician Dr Guy Leschziner of Guy's Hospital in London, who explains how sleep and anxiety can become a vicious circle.

The good news is that there is a new non-drug treatment that is proving remarkably successful - cognitive behavioural therapy for insomnia. The bad news is that there are nowhere near enough trained clinicians able to provide treatment. That provides a gap in the market - and one that Yuri Maricich of US medical tech firm Pear Therapeutics hopes to fill with a mobile phone app of all things.

(Picture: Cell phone addict man awake at night in bed using smartphone; Credit: OcusFocus/Getty Images)

How the rise of 'microwork' is helping develop artificial intelligence. Ed Butler speaks to New York Times reporter Andy Newman about his experience on Mechanical Turk - the Amazon-owned platform that offers tiny jobs for tiny wages. Microworker Michelle Munoz explains how she makes a good living from online microwork in Venezuela. Ronald Schmelzer, analyst at Cognilytica, an AI market research firm, explains why data-labelling tasks common on microworking sites play a central role in developing artificial intelligence. And researcher and author Mary Gray warns about the impact of microwork on workers' rights.

Producer: Edwin Lane

(Photo credit: Getty Images)

Soil degradation is reducing crop yields and adding to climate change. It's a big headache not just for farmers, but for all of us.

But fear not, as Ed Butler heads to a wheat field in eastern England where farmer Simon Cowell thinks he has a simple, counter-intuitive solution to the problem: Cut back on fertilisers and pesticides, and plough less. He claims it restored his land in two years.

But if it's this simple, why isn't everyone doing it? And what happens if we don't do anything? How quickly will we run out of usable soil, and how much carbon will our soils emit into the atmosphere?

The programme also features interviews with Ronald Vargas of the UN Food and Agriculture Organization; professor of soil conservation Jane Rickson of Cranfield University; and geologist David Montgomery of the University of Washington.

Producer: Josh Thorpe

(Picture: Close-up young plant growing in the soil; Credit: Mintr/Getty Images)

Why our growing use of technology is a threat to the planet. Ed Butler speaks to Ian Bitterlin, a visiting professor at the University of Leeds in the UK and an expert in the data centres that underpin the internet and use vast amounts of energy. Ruiqi Ye, a climate and energy campaigner for Greenpeace in Beijing, explains why data centres are adding to the climate change problem. Halvor Bjerke from Norway's DigiPlex, the Nordic region’s leading data centre supplier, tells us why putting more data centres in colder parts of the world could be part of the solution.

Producer: Josh Thorpe

(Photo: Servers in a data centre in the UK, Credit: Getty Images)

How easy is it to predict where tech will take us in the next decade, and have we hit a plateau in the pace of innovation?

Manuela Saragosa speaks to author and artist Douglas Coupland, who retells how a mind-bending run-in with a Google research team left him convinced that the next huge development hurtling towards us like a meteor is what he calls "talking with yourself".

Science fiction predictions of the future are notoriously wayward - where are the hoverboards and ubiquitous fax machines promised by the Back to the Future films? Nonetheless, forecasting tech developments can be 85% accurate over a 10-year time horizon, according to professional futurologist Dr I D Pearson.

But while tech may continue to take us to new and strange places in the long term, has Silicon Valley run out of earth-shattering new products, at least in the short term? The BBC's Zoe Kleinman reports from a rather subdued CES 2020 tech conference in Las Vegas.

Producer: Laurence Knight

(Picture: Cracked egg containing computer circuitry; Credit: sqback/Getty Images)

Royal brands and the value of the monarchy. Manuela Saragosa speaks to the BBC's royal correspondent Jonny Dymond about Prince Harry and Meghan Markle's decision to move away from the royal family. David Haigh from the consultancy Brand Finance outlines the value of the British monarchy to the economy and discusses what Harry and Meghan might do next. Mauro Guillen, professor of international management at the Wharton School in the US, discusses the economic impacts of monarchies around the world.

(Photo: The British royal familyon the balcony of Buckingham Palace, Credit: Getty Images)

Are millennials being given a financial raw deal by their parents' generation? And who do the Baby Boomers expect to pay for their retirement?

Manuela Saragosa looks at the intergenerational contract - the promise that the younger generation will see an improvement in their living standards, in return for which they will care for the older generation in their old age. But is the contract broken?

Many of those born in the developed world in the 1980s and 1990s face inflated housing costs and student fees, stagnant wages and insecure jobs, and little prospect of saving for their retirement. Manuela speaks to one such Millennial - BBC colleague Faarea Masud, whose own podcast series About The Money! charts the precarious financial state of her generation.

Plus Laura Gardiner of think tank The Resolution Foundation explains how the different generations need to work together to manage the demographic challenge of an ageing population, rather than get mired in the "OK Boomer" culture war that has broken out on social media.

Producers: Laurence Knight, Sarah Treanor

(Picture: Close-up of irritated Millennial man with Boomer father looking on; Credit: SDI Productions/Getty Images)