Author: BBC World Service

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Good Bad Billionaire - Gina Rinehart: The other Iron Lady

How mining magnate Gina Rinehart amassed a $30 billion fortune to become Australia's richest person, but also earned a reputation for being highly litigious.

BBC business editor Simon Jack and journalist Zing Tsjeng uncover a woman who has taken legal action against her father's widow, her own biographer and the biggest mining company in the world, and who has been sued by her own children, twice.

They follow Rinehart's story from her outspoken father's discovery of huge deposits of iron ore in Western Australia to inheriting the business and turning it into a multi-billion dollar powerhouse. It's a story that takes in secessionist politics, indigenous land rights and lots and lots of family feuds.

We’d love to hear your feedback. Email goodbadbillionaire@bbc.com or drop us a text or WhatsApp to +1 (917) 686-1176.

To find out more about the show and read our privacy notice, visit www.bbcworldservice.com/goodbadbillionaire

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Focus on Africa - Why are migrants using Mauritania to get to Europe?

There's been a rise in the number of people attempting the dangerous Atlantic crossing from West Africa to Europe. Migrants are once again returning to Mauritania, which is struggling to cope with the growing numbers. Why are migrants choosing Mauritania?

Also, we'll hear a personal and distressing story of how a Nigerian student fled Ukraine and made her way across Europe when the war broke out two years ago.

And why are more African countries growing bamboo?

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Global News Podcast - Bonus: The Global Story

A bonus episode from The Global Story podcast. Bengal famine: The WWii trajgedy the world forgot. The Global Story brings you one big story every weekday, making sense of the news with our experts around the world. Insights you can trust, from the BBC, with Katya Adler. For more, go to bbcworldservice.com/globalstory or search for The Global Story wherever you get your BBC podcasts.

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CrowdScience - Why do we have wisdom teeth?

Why do humans have wisdom teeth if so many of them get removed soon after they appear?

Wisdom teeth, the third molars in the back of our mouths, are so called because they normally appear in late teenage, early adulthood – the time in life we supposedly have learned some wisdom. But around 25% of people don’t develop all four. Of those that do emerge, it is not uncommon for them to appear at nasty angles, jutting into the tooth next door causing potentially dangerous infections and pain. Because of this, for decades many people have them surgically removed.

Listener Khaleel was preparing to have his remaining wisdom teeth removed when he wrote to CrowdScience to ask about them. Given that they can seem to cause more harm than good, why has evolution resulted in these troublesome teeth? But many people have perfectly uneventful relationships with their wisdom teeth, so have we perhaps removed more than we needed to over the years?

Anand Jagatia chews it over with the help of surgeons and dentists to try to extract the truth – why DO we have wisdom teeth?

Featuring: Tanya M Smith, Professor in the Australian Research Centre for Human Evolution at Griffith University, Australia Patrick Magennis, Consultant Oral & Maxillofacial Surgeon at University Hospitals Aintree, Liverpool UK Verena Toedtling, Dentist and Specialist Oral Surgeon, UK

Presented by Anand Jagatia Produced by Alex Mansfield

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Focus on Africa - Are child-beggars on Uganda’s streets ‘sold’?

More than 100 mothers in Uganda have been given community service for allowing their children to beg on the streets of Kampala. We hear more about why street-begging is a huge issue in the country and how most are from a particular region where they are sold as a commodity.

Senegal’s President Macky Sall says he will stand down on 2 April when his term in office expires, but he has not announced a new date for the presidential election. So what will happen next?

And we hear from a Tanzanian student, who fled Ukraine two years ago when Russia invaded, but now she has returned to complete her medical studies, even though the war rages on.

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Science In Action - Largest ever covid safety study

A monumental Covid vaccine safety study of 99 million vaccinated people confirms just how rare adverse effects are and combats growing vaccine misinformation. Co-director of the Global Vaccine Data Helen Network goes through the results of this massive study.

This week, Science in Action is bringing you not one, but two extraordinary astronomical discoveries. First, Webb Fellow Olivia Jones on the star hidden in the heart of only supernova visible from Earth. Second, astrophysicist Samuel Lai on what is possibly the brightest object in our universe – a whopping 500tn times brighter than our sun – a star eating quasar.

And Roland chats with biologist Charlotte Houldcroft who was one of the first to blow the whistle on an absurd, AI generated image which somehow made it through the peer review process.

Presenter: Roland Pease Producer: Ella Hubber Production Coordinator: Jana Bennett-Holesworth

(Image: A health worker injects a man with a shot of the Inavac vaccine for Covid-19. Credit: BAY ISMOYO/AFP via Getty Images)

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Focus on Africa - South Africa’s youth struggling to find jobs

South Africa's finance minister Enoch Godongwana, acknowledged that the country's economy is facing 'a tipping point'. There's massive youth unemployment in South Africa and this recent forecast won't be favourable to young people. We hear reaction and look at possible solutions.

Also, Somalia signs a military and economic deal with Turkey. What's the deal and why has it angered Somaliland?

And Mali, Niger and Burkina Faso want to form their own economic bloc, away from Ecowas. Can it work?

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Unexpected Elements - Going the distance

A scientific tribute to to the successes and potential of Kelvin Kiptum, the best marathon runner to ever take to the roads. Marnie and the team take time to reflect on the tragic loss after Kelvin's death and looks at the science behind his record breaking performances.

Why do East African long distance runners continue to dominate the world stage? Can one group of indigenous people in the state of Chihuahua in Mexico, really run 100km without getting tired? And what makes you fall off the back of a treadmill when you just can't keep going? Is the limiting factor in endurance sports found in the body or the mind?

We also hear how one small insect is having a mighty impact on African ecosystems, and Marnie ponders the future of AI. What happens when we are no longer able to trust our eyes and ears in a world of deepfakes.

Presenter: Marnie Chesterton, with Philistian Mwatee and Tristan Ahtone Producer: Harrison Lewis, with Dan Welsh, Tom Bonnett, Katie Tomsett and Jack Lee

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Focus on Africa - As inflation rises in Nigeria, how expensive is food?

There's anger in Nigeria as food prices continue to rise. Some people have taken to the streets in protest. Inflation is at its highest the country has seen for a generation, at almost 30%. How is the government dealing with the problem?

Also, Kenya's shilling strengthened against the dollar a few days ago, making it Africa's top performing currency. It caused excitement in the country. What's going on, is it all good news?

And African leaders decide on a continent wide ban on the trade in donkey skins. We'll hear fascinating facts about donkeys that you don't quite expect!