There’s a shortage of affordable and social housing in most large urban centres around the world. But the construction sector is blighted by inefficiency and low productivity, and many say it’s ripe for disruption. Could modular or factory-built homes be the answer? We visit the factories and hear from two UK house-building ‘disruptors’; Rosie Toogood CEO of Legal and General Modular Homes and Nigel Banks at Ilke Homes. Mark Farmer of Cast Consultancy explains what’s been holding back innovation and Richard Threlfall, Partner and Global Head of Infrastructure at consultants KPMG gives us his take on the prospects for factory-built homes globally. Plus Rudy van Gurp from Dutch construction company Van Wijnen on why this may just be the cusp of big changes about to take over the construction industry.

Picture description: A crane taking modular home segments and stacking them on one on top of the other to make a new duplex. Picture Credit: Hyoung Chang/The Denver Post via Getty Images

The global pet food industry is predicted to be worth nearly $100bn by 2022. Premium pet food has become big business. Sheila Dillon asks whether we've gone too far in pampering our pooches with expensive treats. We hear from Kevin Glynn and David Nolan, co-founders of food delivery service, Butternut Box. Butcher John Mettrick tells us about the raw pet food he makes for dogs and we peruse the menu at a high-end brunch for canines at M Restaurant in London.

(Photo: Three dogs behind a birthday cake surrounded by balloons. Credit: Getty images)

Reporter Jane Wakefield explores the various ways companies can accommodate those on the autistic spectrum. Jane visits Autocon, a software company based in California which exclusively uses autistic employees. Jane meets company co-founder, Gray Benoist, the father of two autistic sons. We have contributions from employees, Evan, Peter and Brian and hear from Stephen Silberman, author of Neurobites which explores autism in the context of the modern workplace - especially in Silicon Valley. We also get the perspective of the National Autistic Society's Head of Campaigns and Public Engagement, Tom Purser.

(Photo Credit: Autocon)

Jeffrey Sachs, Ngozi Okonjo-Iweala and Mohamed El-Erian discuss the big economic and political trends and risks to watch out for in the year ahead.

Economics Professor Jeffrey Sachs of Columbia University explains his pointed views on the US-China spat over Chinese tech firm Huawei, for which he recently received a barrage of criticism on social media. Former Nigerian finance minister and World Bank managing director Ngozi Okonjo-Iweala relays how Africans have been left astonished and consternated by Brexit. And bond investor supremo Mohamed El-Erian of Allianz and Pimco says the global economy and financial markets are likely to get tougher over the next 12 months, although nowhere near as bad as 2008.

The discussion is hosted by Manuela Saragosa. The producer is Laurence Knight.

Producer: Laurence Knight

(Picture: A man jump between 2018 and 2019 years; Credit: oafawa/Getty Images)

Will we all abandon our cars in favour of self-driving taxi apps by the year 2030, or is this pure fantasy?

Justin Rowlatt takes on the many sceptical responses he received from readers to an article on the BBC website in which he sought to explain "Why you have (probably) bought your last car". In it, Justin laid out the thesis of tech futurist Tony Seba that the convergence of three new technologies - the electric vehicle, autonomous driving, and the ride-hailing app - together spelled the imminent death of the traditional family-owned petrol car.

But can AI really handle the complexities of driving? Is there enough lithium in the world for all those car batteries? And what if this new service becomes dominated by an overpriced monopolist? Just some of the questions that Justin pitches to a field of experts, including psychology professor Gary Marcus, management professor Michael Cusumano, renewable energy consultant Michael Liebreich, and Uber's head of transport policy Andrew Salzberg.

Credit: Laurence Knight

(Picture: Illustration of electric car; Credit: 3alexd/Getty Images)

Had a late night? Well here's a programme about insomnia and the businesses trying to solve it.

Elizabeth Hotson takes part in what is possibly the world’s laziest gym class, and speaks to bed manufacturers, sleep app engineers and the inventor of a sleep robot.

But does any of these solutions actually work? Elizabeth asks Dr Michael Farquhar, sleep consultant at Evelina London Children’s Hospital. Plus Dr Michael Grandner, director of the sleep and health research programme at the University of Arizona, suggests a cost effective way of curing insomnia. Producer: Elizabeth Hotson

(Picture: Man suffering from insomnia; Credit: chameleonseye/Getty Images)

How did whisky become the world's favourite tipple? Elizabeth Hotson discovers the secrets behind the water of life.

Rachel McCormack, author of Chasing the Dram, tells us how the giants of scotch attained their legendary status, and we delve into the archives of one of the world's most famous whisky brands with Christine McCafferty of drinks leviathan Diageo.

Elizabeth also talks to distillers from across the globe, including Whistlepig from the US state of Vermont, Japan’s Chichibu distillery, Spirit of Hven in Sweden and Rampur from India. She also unlocks the secrets of Scotland's silent distilleries during a visit to Edradour, and samples the most popular whisky cocktail at one of the world's best bars. Lucky Elizabeth!

(Picture: Glenlivet barrels; Credit: BBC)

What role can businesses play in filling Africa's cartographical gaps? And can better maps help fight diseases like cholera?

In her third and final programme about the progress being made in properly charting the continent, Katie Prescott asks what companies can do in locations where satellite images cannot penetrate dense rainforest and cloud cover, or in slums whose streets are not navigable by Google streetview cars.

She speaks to John Kedar of Ordnance Survey, Zanzibar planning minister Muhammad Juma, Tom Tom vice president Arnout Desmet.

(Picture: Satellite images of rural Tanzania; Credit: Google maps)

The property market in some US cities has still not recovered from the 2008 meltdown, while others may be seeing the return of risky subprime lending.

Vishala Sri-Pathma travels to Slavic Village in Cleveland, Ohio, which became a by-word for the mass repossessions that followed the bursting of the housing bubble a decade ago. In the nearby Mount Pleasant neighbourhood, where property prices remain 70% below their peak and many houses are still boarded up, Anita Gardner has set up a community group to help residents with housing problems.

Meanwhile on the other side of the nation, Austin in Texas is the fastest growing city in the US, thanks to an oil and tech boom. But Edward Pinto of the American Enterprise Institute explains why there are fears that the loosely regulated federal housing loans that are fuelling this boom could be the next subprime crisis in the making.

(Picture: A resident walks past a boarded up building in the Mount Pleasant neighbourhood in Cleveland, Ohio; Credit: Timothy A Clary/AFP/Getty Images)

Five years ago, Cyprus was in crisis. An international bail-out worth over ten billion dollars saved the economy from meltdown, but also cemented the Mediterranean country’s ties to wealthy Russians. Many of them received a slice of Cypriot banks for cash seized from their accounts to help fund the rescue plan. A controversial and lucrative investment-for-passport scheme has also attracted Russian money - as well as new EU scrutiny.

While many banks have ditched their Russian clients and authorities have implemented a new system of stringent checks, Ivana Davidovic travels to the port of Limassol to investigate whether Cyprus has really cleaned up its act.

(Picture: Yachts line the marina in Limassol, Cyprus; Credit: Sean Gallup/Getty Images)

The history of the spice trade, and the human misery behind it, is explored by Katie Prescott.

Katie travels to the spice island of Zanzibar in the Indian Ocean, where cloves, turmeric, nutmeg and vanilla are still grown to this day. But it also supported a trade in African slaves who worked the spice plantations, as Katie discovers at what was once the local slave market.

Food historian Monica Askay recounts the cultural importance that these spices gained in Europe and the other markets where they ended up, while Rahul Tandon how they came to define Indian cuisine.

(Picture: Spices; Credit: Whitestorm/Getty Images)

Will legal cannabis and smart scooters help transform the atmosphere that Angelenos breathe? Jane Wakefield reports from the Los Angeles on two hi-tech industries hoping citizens will breathe deeply.

Smart scooters have been taken up with alacrity in a city notorious for its traffic jams and smog, and public official Mike Gatto is a big fan. But not everyone is happy with users' lack of respect for the rules of the road.

Across town, at the clean-cut offices of marijuana app Eaze, Sheena Shiravi explains how getting high is becoming increasingly hi-tech.

(Picture: Airplane landing at Los Angeles Airport above a billboard advertising marijuana delivery service Eaze; Credit: Mario Tama/Getty Images)