Social media platforms, like Instagram and Xiaohongshu, are full of shopping tips to help you spend. But they can also help you save, partly by providing support and advice through groups of like-minded individuals - or, in China, da zi. This is a growing trend, especially among young women.The BBC’s Sylvia Chang explains why they’re joining, and how this could impact China’s economy. We also hear from Anita Nkonge, in Kenya, about a popular saving challenge there.Plus, if you’re currently on a budget we’ve got five top tips on how to save from Ashley Lee (@hermoneymastery on TikTok). Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Mora Morrison, Maria Clara Montoya and Julia Ross-Roy Editor: Verity Wilde

Challengers. Poor Things. Saltburn. Three Hollywood movies released in the last six months which haven't held back on sex. However, the stats tell us movies in America are actually getting less steamy…A study from The Economist suggests that sexual content in movies has dropped by 40% since 2000. BBC Culture reporter, Annabel Rackham, explains what’s behind this Hollywood trend.Intimacy co-ordinators are a more regular sight on sets these days, helping people in front of the camera and behind it to navigate their way through a sensitive scene. Alicia Rodis, an intimacy co-ordinator who’s worked on Watchmen, And Just Like That and The Deuce, explains what the job entails.Plus, BBC Asian Network’s Haroon Rashid describes how sex and romance is treated in Bollywood. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Alex Rhodes Producers: Emily Horler, Baldeep Chahal and Adam Chowdhury Editor: Verity Wilde

Epic Games. Microsoft. Riot Games; owners of the biggest computer game titles in the world and part of a gaming industry which has been valued at $200 billion. That’s more than the music and entertainment industry combined. It’s not all plain sailing though.Epic Games, which created Fortnite, recently cut 870 jobs. Microsoft, which now owns Activision-Blizzard; famous for the Call of Duty and Red Dead Redemption series, announced 1,900 job losses earlier this year. League of Legends maker Riot Games reduced their workforce by 10%, which meant 530 job cuts. It’s estimated that 18,000 jobs have been lost over the past couple of years. BBC gaming expert Mel Ramsay explains what’s going on. Also, Harriet in the UK and Francis from Canada share their experiences of being laid off. They give their views on the impact on the gaming sector and how to improve things for employees. And we take a quick look at the computer game sector in Nigeria, where the demand for home grown mobile gaming is taking off. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Alex Rhodes Producers: Julia Ross-Roy, Josh Jenkins and Adam Chowdhury Editor: Verity Wilde

Zimbabwe has a brand new currency; it’s called the ZiG (Zimbabwe Gold) and it’s backed by the country’s gold reserves. This is the third time they’ve launched a new currency in ten years and 80% of transactions in the country are now carried out in US dollars. Can the government persuade its citizens that this one will remain stable and not deflate?The BBC’s Zimbabwe correspondent Shingai Nyoka explains how people pay for stuff in the country and why the government has brought in a new currency. Two guys in Harare tell us what they make of the ZiG, and whether they’re using it instead of the US dollar. Also Baldeep Chahal from the What in the World team brings us some other examples of countries changing their currency and chats about whether it ever works. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Alex Rhodes Producers: Julia Ross-Roy and Baldeep Chahal Editor: Verity Wilde

Demonstrations over the war in Gaza have taken place at several universities in the US over the past few weeks. They have spanned from Columbia University in New York, to universities in Chicago, Texas and California.In the last month, more than a thousand people have been arrested. The BBC’s North America Correspondent Nomia Iqbal explains what has been happening and how this might affect the upcoming US election. And Bernd Debusmann Jr tells us about the history of student demonstrations in America.Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Emily Horler, Maria Clara Montoya, Josh Jenkins and Adam Chowdhury Editor: Verity Wilde

Nature conservation is effective at protecting animals and plants - and we’re getting better at it. That’s according to a new major study published in the journal Science. Esme Stallard, a BBC climate and science reporter, explains what conservation is, where it’s worked (including for humpback whales), and why we need it. Plus, we hear from two people who work in conservation. Charles Emogor has a PhD in pangolins and is from Nigeria. He shares why he loves them and how he’s saving them from being hunted. And Aiita Joshua Apamaku, from Uganda, tells us why he finds conservation so exciting. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Mora Morrison, Baldeep Chahal and Sophie Smith Editor: Verity Wilde

Modest fashion has been steadily gaining more global recognition over the past decade, with longer hemlines spotted on the runway. It’s now estimated to be worth around $300 billion. But modest fashion isn’t just religious coverings, loose dresses, or even your grandmother’s cardigan. At Modest Fashion Week in Istanbul there was everything from faux fur, to gold silk and platform heels. Megan Lawton, a BBC reporter in Toronto, has been looking into how modest fashion has shifted outside the leading markets in Iran, Turkey and Saudi Arabia to the US and Australia. She’s spoken to the founders of Reflective - an online marketplace for modest clothes.We also hear from Nawal Sari, a Muslim model and content creator in Australia, about how the modest-friendly options have shifted over the years - and how authentic some marketing of the clothing is.Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Emily Horler, Mora Morrison and Benita Barden Editor: Verity Wilde

Sierra Leone’s capital Freetown and other cities have been suffering blackouts for weeks. It’s disrupted hospitals and daily life for many. Most of Freetown’s power comes from a Turkish ship floating off the country’s coast - and they’ve massively reduced electricity supply to the city because of unpaid bills. Karpowership is one of the world's biggest floating power plant operators, with several African states relying on it for electricity.BBC journalist Chimezie UcheAgbo explains where Sierra Leone gets its power and what’s causing the blackout. Fatmata Gassim (19), an engineering student in Freetown, tells us how the blackout has affected her. We also hear about power outages in Ghana (from the BBC’s Favour Nunoo in his car) - and the rocketing cost of electricity in Nigeria. Irene Leigh (23) sends us a message about how her company, EasySolar, is helping people in Sierra Leone find alternative ways to get their power. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Emily Horler and Mora Morrison Editor: Verity Wilde

President Biden has just signed a law that says TikTok’s Chinese owner, ByteDance has nine months to sell the app or it will be blocked in the US. We hear what TikTok users in the US think about the ban - and how it would affect them. Liv McMahon from the BBC tech team explains why the US government has done this, how TikTok has responded - and why it won’t be easy to sell the app. And the BBC’s Kerry Allen describes the origins of TikTok in China and the Chinese reaction to the ban.Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Benita Barden and Mary Isokariari Editor: Verity Wilde

Nuclear weapons have been back in public conversation recently - partly due to rising tensions between Iran and Israel. Outside of the news, they have also been featured a lot in films and TV shows. (Think Oppenheimer and Fallout). But, what are nuclear weapons? And is it likely they’ll be used again? Or, have we learnt from what happened in Hiroshima and Nagasaki?The BBC's security correspondent Gordon Corera explains. We also hear from a nuclear studies student in Islamabad, Pakistan, about why young people should care about them. Plus, Alex Rhodes from the team talks us through some nuclear close calls. This includes how the actions of one Stanislav Petrov could have saved us all. Instagram: @bbcwhatintheworld WhatsApp: +44 0330 12 33 22 6 Email: whatintheworld@bbc.co.uk Presenter: Hannah Gelbart Producers: Mora Morrison, Alex Rhodes and Maria Clara Montoya Editor: Verity Wilde