Emperor penguins are icons of the penguin world. They are only found in the wild in Antarctica and breed and raise their babies on the ice. Because the Antarctic is so massive and difficult to explore, scientists rely on satellite images to detect colonies and the penguins’ activities.

Once a year penguins shed all their feathers on the ice and replace them with new ones. The feathers they leave behind can also be seen on satellites - but now scientists are worried. Recently they haven’t seen much evidence of this “mega moult”. BBC climate and science correspondent Georgina Rannard explains what this could mean for the Emperor penguin populations.

And finally, Ash from the What in the World team brings a few more animal stories she’s spotted this week, including an update on viral sensation Punch the Monkey, in Ichikawa City Zoo in Japan.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Julia Ross-Roy, William Lee Adams and Ash Mohamed Editor: Verity Wilde

Vogue and Business Insider have declared 2026 the ‘year of the cabbage’. The vegetable has gone viral amid the rise of ‘fibremaxxing’ - with young people posting reels praising it for its versatility and trying to glamourise it with healthy gourmet-style meals. So, why has the humble vegetable had a rebrand? And what does it tell us about Gen Z finances?

BBC reporter Basma El-Atti explains the trend - and tells us about the fibre gap. And Zara Hiridjee, a nutritionist in the UK explains how much fibre we need, whether you can have too much and the different types of fibre you need in your diet.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Benita Barden, Chelsea Coates and Emilia Jansson Video producer: Baldeep Chahal Editor: Verity Wilde

On Sunday Mexican security forces killed El Mencho, one of the country’s most wanted drug lords and the leader of the Jalisco New Generation Cartel (CJNG). In response, members of the feared cartel have unleashed a wave of violence across 20 Mexican states.

Jack Burgess, a BBC reporter who covers international affairs, explains what’s been happening. And Laura Garcia, a BBC reporter from Mexico, explains how cartels recruit young people and how everyday Mexicans have had to adapt to the threat of cartel violence.

The uptick in violence comes as Mexico prepares to host the World Cup, alongside the U.S. and Canada, between 11 June and 19 July. BBC Sport reporter Daniel Austin tells us how fans have been reacting and what it might mean for the football tournament.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams and Benita Barden Editor: Verity Wilde

The gig economy is booming. This is where people get paid per job - and use an app to get their work. Most commonly it’s used for food delivery and taxis. India's gig workforce is 12 million strong and expected to double to 24 million by 2030.

But recently thousands of gig workers in Delhi led massive protests over their pay and working conditions. They were also upset about the pressures of having to deliver products within 10 minutes - a guarantee some companies had initiated to try to get an edge in a very competitive market. Meghna Kanwar, a Brut journalist in India, explains some of their complaints - and how the government and companies responded.

And it’s not just India; there have been gig worker protests all over the world in the last few years, including in the US, UK, Brazil, South Africa, China and Indonesia. Nathalia Jimenez, our BBC business reporter in New York, tells us what some of them were about - and whether they made a difference.

We also hear from Mu'nisah Ujima, a food delivery driver in Atlanta, USA, on some of the upsides and downsides she experiences.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Julia Ross Roy, Benita Barden, Ash Mohamed and Chelsea Coates Video Journalist: Baldeep Chahal Editor: Verity Wilde

The Winter Olympics are over and aren’t back until 2030. Some of the athletic highlights include the first Winter Olympic gold medal won by a South American nation, thanks to Brazil's Lucas Pinheiro Braathen, and also American figure skater Alysa Liu’s comeback. But then there’s some more dramatic moments like the public confessions of cheating and a condom shortage…

William and Chelsea from the What in the World team tell us their Winter Olympics highlights.

And we speak to BBC sports reporters Sarah Mulkerrins and Emma Smith, who’ve been following the games in Italy to get a good debrief of it all.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams and Chelsea Coates, Benita Barden Editor: Emily Horler

Andrew Mountbatten-Windsor - formerly known as Prince Andrew - has now been released under investigation, after he was arrested on Thursday (on his birthday!) on suspicion of misconduct in public office.

Police are looking into allegations that the former prince shared official documents with the late American sex offender Jeffrey Epstein. Police have been searching his properties, but this arrest is not related to any sexual offences and Andrew has always denied all wrongdoing. It’s still a significant moment, as the first time in modern history that a senior member of the British Royal Family has been arrested. His brother, King Charles, has said in a statement, “the law must take its course”.

In this episode, we explain what Andrew is being investigated for, what it might mean for the future of the British Royal Family - and the effect it could have on the ongoing calls for accountability for people with links to Epstein.

We also have two past episodes you might want to listen to. One where we explain why why Andrew was stripped of his title: The Andrew Formerly Known as Prince https://www.bbc.co.uk/sounds/play/w3ct73mj

And another all about the final drop of the Epstein files: Who and what are in the Epstein files https://www.bbc.co.uk/sounds/play/w3ct73y0

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Emily Horler and Chelsea Coates Editor: Verity Wilde

What’s going on with the price of gold? The precious yellow metal is super important to lots of cultures across the world. In China, its a big part of the Lunar New Year, while in India, gold gifts are linked to marriage traditions. And of course - most of us have dreams of getting our hands on some gold jewellery!

So in this episode, William Lee Adams, from the What in the World team and former host of Marketplace Morning Report, will give us all the deets on those rising rates. We’ll chat the changing value of gold, spot price vs bullion, what’s behind it and why you should care.

Plus, Anahita Sachdev, a reporter in the US, takes us through India’s relationship with gold.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Emily Horler, Benita Barden and Emilia Jansson Video Journalist: Baldeep Chahal Editor: Verity Wilde

We’re talking about Lunar New Year - it’s the year of the fire horse and it’s the first time this particular combination of Chinese zodiac sign and element has rolled around in 60 years, and the hype is real.

The story, myth and legend of the animals of the Chinese New Year calendar comes from an ancient Chinese poem telling the story of 12 mythical animals who ended up racing each other to decide which order they would appear in the Chinese zodiac.

We’re gonna get into how the Lunar New Year is celebrated across the world, hear from some BBC pals about how they’re celebrating and also from some of you guys about your traditions and why this year is special.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Emily Horler and Chelsea Coates Editor: Verity Wilde