Many African universities are not up to scratch, leaving African students vulnerable to scam institutions abroad. Ivana Davidovic reports from Northern Cyprus where many African students go looking for a better education. Nigerian businessman Evans Akanno explains the education problem at home, and Professor Tshilidzi Marwala, vice chancellor at the University of Johannesburg in South Africa, explains the scale of the problem.

(Photo: University students in Lagos, Nigeria, Credit: Getty Images)

Nigeria goes to the polls to elect a president this weekend. Two issues are prominent - the state of the economy and corruption. Local businessman Evans Akanno tells us why just getting the electricity to stay on would be a good start. Amy Jadesemi, CEO of the Lagos Deep Offshore Logistics Base, explains why global oil prices are still crucial to Nigeria. Benedict Crave, Nigeria analyst at the Economist Intelligence Unit, explains why challenger Atiku Abubakar might win the presidency.

(Photo: A woman walks past presidential campaign posters in Lagos, Nigeria, Credit: Getty Images)

Last month Dutch historian Rutger Bregman told the billionaires at the World Economic Forum in Davos they should think less about philanthropy and instead pay more tax. The clip of his speech went viral. He comes on the programme to argue his point with Ed Conard, a visiting scholar at the American Enterprise Institute and author of the book The Upside of Inequality, who says higher taxes just stop people innovating.

(Photo: Rutger Bregman, Credit: Getty Images)

Funereal solutions on an overcrowded planet - Ed Butler investigates what various countries do when they run out of space to bury their dead.

In Japan, where the construction of new crematoriums has often been blocked by unhappy neighbours, there is a literal multi-day backlog of bodies awaiting burial - and businesses ready to host them. In Greece, crematoriums are opposed by the Orthodox Church, so the solution has been the controversial practice of exhuming bodies just a few months after burial and transferring the decomposed remains to an ossuary.

Meanwhile in Los Angeles, mortician Caitlin Doughty tells Ed about an innovative new method of body disposal - disintegrate them in a solution of highly caustic potassium hydroxide.

(Picture: Grave-digger; Credit: David Turnley/Corbis/VCG via Getty Images)

Will online shopping and AI combine to kill the high street clothing store?

Ed Butler gets himself digitally measured up in order to try on outfits in cyberspace, with the help of Tom Adeyoola, founder of virtual browsing business Metail. Meanwhile Julia Boesch - who runs Outfittery, one of Europe's biggest online fashion retailers, out of her office in Berlin - explains how artificial intelligence is enabling her company to provide customers with the kind of individualised style advice they would normally find in a bespoke tailors.

So is the roll-out of AI-enhanced phone-based services going to revolutionise the way we buy our attire? Yes, says Achim Berg of consultants McKinsey - but not quite yet.

(Picture: Body scan to provide exact measurements at custom tailoring shop Alton Lane in Washington DC; Credit: Marvin Joseph/The Washington Post via Getty Images)

At what point should you give up your day-job to pursue your own business side-project full-time? And should governments do more to help those who want to do it?

Manuela Saragosa explores the world of the successful "side-hustler" - the closet entrepreneur who takes an after-hours pet project and turns it into a whole new business. Alexandria Wombwell-Povey gave up insurance brokerage to launch her jam-making company Cham, while Emma Jones set up the website Enterprise Nation to support such go-getters.

Meanwhile, Maddy Savage reports from Sweden, where all full-time employees have a legal right to unpaid leave in order to pursue their own start-up.

(Picture: Businesswoman looks wistful and distracted in a meeting with her colleagues; Credit: Squaredpixels/Getty Images)

If the UK crashes out of the EU on 29 March with no agreement on continuing trade relations, how will it affect Britain's supplies of fresh food? Could the country's supermarket shelves be left empty?

Dan Saladino speaks to farmers, traders and officials fretting at the unknown but potentially serious consequences of a "no deal" Brexit for food security in the UK, as well as one middle class family who are already stockpiling their own food supplies.

Interviewees include Guy Singh-Watson of Riverford Farm, Professor Tim Lang of City University London, Ian Wright of the Food & Drink Federation, Andrew Opie of the British Retail Consortium, Emily Norton of Nuffield College Oxford, Tim Worstall of the Adam Smith Institute, and New Covent Garden mushroom trader Michael Hyams.

(Picture: A mother and her son look at the empty bakery shelves in a supermarket in Tewkesbury, England following flooding in 2007; Credit: Matt Cardy/Getty Images)

Climate Change: Can the world economy continue to grow without burning fossil fuels? Or do we all need to cut back on our consumption in order to save the planet?

It is a question that splits the green movement. Justin Rowlatt hosts a fiery debate between two environmentalists on either side of the divide, who have already been tearing chunks out of each other in a very public dispute online.

Michael Liebreich, who runs a clean energy and transportation consultancy in London, says the technological solutions to global warming are within our grasp, and that maintaining economic growth is essential to bringing carbon emissions under control. Meanwhile Tim Jackson, professor of sustainable development at Surrey University, says that it is precisely the world's obsession with economic growth that is dooming Planet Earth to disaster.

Producer: Laurence Knight

(Picture: The sun sets behind an oil and gas platform in the Santa Barbara Channel, California; Credit: David McNew/Newsmakers/Getty Images)

Are Apple and Samsung running out of people to sell their smartphones to? And who wants to pay for an upgrade when their old phone is good enough?

Manuela Saragosa asks whether Apple's recent disappointing earnings are less to do with China's slowing economy - as the company claims - and more the fact that the market for iPhones has become saturated. With few major tech improvements on the horizon, is the smartphone about to become just another mass-produced, low-margin product?

The programme features interviews with phone industry analyst Ben Wood of CCS Insight, management professor Yves Doz of Insead in Paris, and Barry C Lynn of the Open Markets Institute thank tank in Washington DC.

(Picture: Group of people using smartphones outdoors; Credit: ViewApart/Getty Images)

More and more women are choosing to freeze their eggs in their twenties - but is it all just a big waste of money?

Manuela Saragosa speaks to Jennifer Lannon, who paid thousands of dollars at the age of 26 to preserve her eggs as a hedge against infertility later in life. But are the companies that offer this service - sometimes at special cocktail parties - just exploiting women's anxieties?

Patrizio Pasquale is Professor of Obstetrics, Gynecology, and Reproductive Sciences at Yale is a sceptic. But Gina Bartasi, founder of the US fertility business Kindbody, says it's all about female empowerment and overcoming the patriarchy.

(Picture: Liquid nitrogen tank at a fertility clinic; Credit: SUPERFROYD/Getty Images)

Will indictments against China's tech giant overshadow US trade talks? We hear from Timothy Heath, defence analyst at the Rand Corporation, about the threat to security Huawei is perceived to pose in the US, and from cyber security expert Dmitri Alperovitch on the history of industrial espionage by Chinese actors. Dr Jie Yu, China research fellow at the London thinktank Chatham House assess the risk to the trade talks.

(Photo: Huawei logo on a building in Poland, Credit: Getty Images)

Two rival presidents, oil sanctions from the US and hyperinflation. Venezuela's economic and political crisis is deepening and we hear from some of the people caught in it. Venezuelan economist Carlos de Sousa from Oxford Economics explains the economic context. Presented by Ed Butler.

(Photo: A protester on the streets of Venezuela's capital Caracas, Credit: Getty Images)