The running shoe industry is worth around $50bn across the world, with more and more of us taking part in the sport.

With more popularity comes more competition, so what are brands doing to keep consumers interested? We ask the chief marketing officer at Swiss sportswear company, ON, and find out how it helps sales when a top athlete wears their shoes.

And as the debate around 'super shoes' rumbles on, are they really worth the expensive price tag? US marathon winner Kellyn Taylor tells us about the pros and cons of carbon plated shoes - which played a big role in marathon records being smashed in 2023.

Presented and produced by Izzy Greenfield.

(This programme was first broadcast in January 2024. Picture: Runners on a race track. Credit: Getty Images)

We’re used to fashion giants like adidas and Nike designing athlete uniforms for the Olympics and Paralympics.

This year however, it’s likely we’ll see smaller labels on the podium.

In this programme we hear from the diverse list of designers and learn why the fashion industry is so keen to work with sports stars.

Presented and produced by Megan Lawton

(Image: Portugal's Gabriel Ribeiro competes during the Skateboarding Men's Street Preliminaries of the Olympic Qualifier Series 2024.Image: Getty Images)

People arriving at Paris’s Orly Airport for the 2024 Olympic games will be able to take an underground train straight to Saint-Denis where most of the Olympic action is taking place.

It's thanks to a line extension that opened on June 24. And that is just the ‘hors d’oeuvre’. The Grand Paris Express is a metro expansion on a massive scale whose aim is to transform the city from a normal-sized European capital to a metropolis the size of London.

What could it do for the Parisian, and French, economies?

(Image: Saint-Denis–Pleyel station in Paris, France. Copyright: Société des grands projets / Kengo Kuma & Associates / Sylvain Cambon)

Presented and produced by John Laurenson

We go to India to find out what it takes to manage one of the country's most iconic brands – Bisleri.

It is so popular that it has become synonymous with the product itself - bottled mineral water.

We hear from CEO Angelo George about the ethics of paying for water, plastic pollution and the challenges of shrinking water resources.

Produced and presented by Devina Gupta

Sound mixing by Wayne Parkes

(Image: Angelo George. Credit: Angelo George)

For decades, Nigeria has struggled to grow its domestic automotive industry while vehicles made by manufacturers from Japan, Korea, Europe and the US have dominated. But critics say many of those cars are not suitable for Nigeria’s roads.

Lately, there has been a surge of “made in Nigeria” brands, of vehicles manufactured and assembled locally, which have been designed with the country’s challenging road conditions in mind.

But as Nigerians are gearing up to the idea of replacing their trusted foreign brands with local alternatives, China has introduced a range of vehicles tailored to the Nigerian market - but cheaper.

(Image: A Nord Tank SUV. Credit: Tobi Ajayi)

Presented and produced by Peter Macjob

Love them or loathe them, retailers across the world are installing more automated checkouts, as they aim to reduce staff costs.

But the loss of personal service and the unreliable technology has prompted complaints from customers.

And supermarkets are also facing a significant increase in theft from self-scan checkouts.

We're in Ireland, where shops only installed the technology in recent years. Plus we hear from experts in Australia, China, the UK and United States.

(Image: A man scans some bread through a self checkout. Credit: Getty Images)

Produced and presented by Russell Padmore

We head to Montreal, host city of the Canadian F1 Grand Prix.

It's the country's largest tourist event, with an estimated 345,000 fans attending in 2023.

And the sport is growing in popularity, thanks in part to the Netflix series, Drive to Survive.

So how valuable is a Grand Prix to a country's economy? And which other cities are trying to get in on the action?

Produced and presented by Megan Lawton

(Image: The start of the Canadian Grand Prix at Circuit Gilles Villeneuve in Montreal, Quebec on 9 June 2024. Credit: Getty Images)

Some cities around the world have decided to make public transport free. Services can range from local bus routes to shopping malls to city-wide transit. We're in the rich nation of Luxembourg which became the first country to introduce free public transport nationally, as well as in Delhi where women can travel for free in an effort to boost the numbers of women in the workforce. We're also hearing from Kansas City where the funding model is running out for a scheme introduced four years ago. Produced and presented by Daniel Rosney

Image:A woman boards a bus in New Delhi in October 2019, following a Delhi goverment travel scheme distributing free bus tickets for women. (Photo by Sajjad HUSSAIN/AFP via Getty Images)

We hear from Democrat fundraisers who are divided over whether he should pull out of the campaign for re-election.

In the past week, since Joe Biden's disastrous debate performance, a number of donors have publicly warned they will withhold funds unless Mr Biden is replaced as the Democratic party candidate.

Pressure on Mr Biden, 81, to step aside has grown, including from Hollywood celebrities George Clooney and Michael Douglas.

However he has vowed to stay on, taking on Donald Trump, 78, in the November presidential election.

Produced and presented by Ed Butler

(Image: President Joe Biden speaks during a 4th of July event on the South Lawn of the White House on July 4, 2024 in Washington, DC. Credit: Getty Images)

Two football mad continents, Europe and South America, are competing in international tournaments at the moment.

Fans are all decked out in their teams shirts - but they’re not all wearing the latest versions.

In fact, sales of retro or vintage shirts are booming.

Be it the iconic Italian kits of the 90s, the classic sky blue of Argentina or Nigeria’s viral world cup kit - we look into this trend and speak to the fans who are buying, and the companies cashing in.

Produced and presented by Imran Rahman-Jones.

Image: A fan wears a retro Eric Cantona shirt before a Manchester United match in April 2024. (Photo by Michael Regan/Getty Images)

It's the biggest operation of its kind in US history, as the state tries to save its coastline which is vanishing at an alarming rate.

We travel to the Mississippi River and the city of New Orleans to see how billions of dollars are being spent to fix the rapid land loss.

The project to revert the Mississippi to its land-making pathways could restore ecosystems destroyed by the Deepwater Horizon oil spill and create buffers to protect against sea level rise and hurricanes.

The Louisiana coastline is disappearing due to human-made and natural factors, such as leveeing the Mississippi for oil and gas infrastructure, erosion, and sea-level rises.

And this is having an impact on local wetlands which are eroding, leaving communities vulnerable to storm surges and flooding.

Produced and presented by Beth Timmins

(Image: Oyster shells painted by members of the community as part of the shorelines project )

The global alcohol industry is worth just over one and a half trillion US dollars, and celebrities want a part of it.

Famous faces and their drinks brands are filling up the shelves, from model Kendall Jenner’s tequila to actor Ryan Reynolds’s gin. And it’s not just alcohol: the energy drink market is in the sights of celebrities, too. How much more are customers willing to pay for these products?

In today’s episode of Business Daily, we'll ask those who stock the drinks, and those who serve them, how much difference - if any - a famous name makes, and we'll hear why celebrities and brands benefit from mutual association.

(Picture: David Beckham and Kendall Jenner. Credit: Getty Images/BBC)

Presented and produced by Izzy Greenfield