Toto Wolff is the most successful team principal in Formula One history. BBC business editor Simon Jack and journalist Zing Tsjeng find out what drives him. From losing his father and abandoning his own racing dreams, Toto Wolff redirected his love of risk and need for control into venture capital, making millions during the early tech boom.

Ronnie Screwvala changed the viewing habits of the world’s most populous country, India - but he started out selling toothbrushes. BBC business editor Simon Jack and journalist Zing Tsjeng chart his journey, from knocking on apartment doors in 1980s Mumbai selling cable TV, to building a media empire that would transform Indian entertainment.

Larry Ellison’s business mantra is simple: “It is not sufficient that I succeed — everyone else must fail.” From humble beginnings as an adopted child in Chicago to becoming one of the richest men in history, BBC business editor Simon Jack and journalist Zing Tsjeng trace the relentless ascent of one of Silicon Valley’s most combative and controversial figures.

After recognising the commercial potential of databases, Larry Ellison founded Oracle in the 1970s and spent the next two decades driving an aggressive sales culture that fuelled meteoric growth — and nearly sank the company in an accounting scandal. But Larry Ellison rebuilt his company into a global enterprise software giant, and in recent years has extended his influence beyond technology into Hollywood. All while amassing fighter jets, yachts, and even a Hawaiian island.

Good Bad Billionaire is the podcast that explores the lives of the super-rich and famous, tracking their wealth, philanthropy, business ethics, and success. There are leaders who made their money in Silicon Valley, on Wall Street and in high street fashion. From iconic celebrities and CEOs to titans of technology, the podcast unravels tales of fortune, power, economics, ambition and moral responsibility. Simon and Zing put their subjects to the test with a playful, totally unscientific scorecard — then hand the verdict over to you: are they good, bad, or simply billionaires? Here's how to contact the team: email [email protected] or send a text or WhatsApp to +1 (917) 686-1176. Find out more about the show and read our privacy notice at www.bbcworldservice.com/goodbadbillionaire

Once hailed as the next Steve Jobs, Elizabeth Holmes became the world’s youngest self-made female billionaire after founding Theranos, a startup that promised to revolutionise healthcare with hundreds of blood tests from a single drop. BBC business editor Simon Jack and journalist Zing Tsjeng trace Elizabeth Holmes’s journey from precocious Stanford student to biotech entrepreneur, before unpacking how secrecy and hype masked a technology that couldn’t deliver. When Theranos collapsed spectacularly, a Silicon Valley dream became one of the biggest corporate scandals of the century.

Simon and Zing bring you a weekend listening recommendation: The Interface, the BBC's fiercely informed, fast and funny take on how tech is changing everything.

Hosted by three leading tech journalists whose work covers every aspect of the subject, each episode unpacks week-by-week the unfolding story of how technology is shaping all our futures. No guests. No jargon. Just three sharp voices debating the tech news stories that matter - whether they shook a government, broke the internet, or quietly tipped the balance of power.

As TikTok shifts geopolitics, Trump drives digital shockwaves, Elon Musk expands his space-internet empire and AI reroutes the routines of everyday life - the trio ask: what world are the tech titans building for us? And do we want to live in it?

If you’re in the UK, you can listen to The Interface on BBC Sounds. Everywhere else, find it on BBC.com or wherever you get your podcasts.

Peggy Cherng never set out to work in fast food, but her engineering mindset transformed how millions of Americans eat. Journalist Zing Tsjeng and BBC business editor Simon Jack trace Peggy Cherng’s journey: from electrical engineering and simulating battlefields, to co-founding Panda Express with her husband Andrew and becoming a billionaire. By applying data and rigorous standardisation, Peggy Cherng helped turn a single mall food-court experiment into the largest Chinese fast-food chain in the USA, with their orange chicken becoming a cultural staple.

How Ben Francis went from pizza delivery boy to the UK’s youngest billionaire, by founding sportswear brand Gymshark. BBC business editor Simon Jack and journalist Zing Tsjeng explore Ben Francis' remarkable rise: from sewing gym vests in his parents’ garage, to innovating in influencer culture. In Gymshark, Ben Francis created one of the fastest growing fitness brands in the world, with the ambition to take on athleisurewear giants like Nike and Adidas.

She skateboards to work, has a skydiving license, and was the world’s youngest self-made female billionaire. Journalist Zing Tsjeng and BBC Business Editor Simon Jack tell the story of Lucy Guo and trace her trajectory to becoming one of the tech titans. From dropping out of college to join Peter Thiel’s Fellowship, to couch-surfing as a millionaire, they follow Lucy Guo's journey to found Scale AI, a company that trains artificial intelligence for giants like OpenAI’s ChatGPT, Google, and Microsoft.

Good Bad Billionaire is the podcast that explores the lives of the super-rich and famous, tracking their wealth, philanthropy, business ethics, and success. There are leaders who made their money in Silicon Valley, on Wall Street and in high street fashion. From iconic celebrities and CEOs to titans of technology, the podcast unravels tales of fortune, power, economics, ambition and moral responsibility. Simon and Zing put their subjects to the test with a playful, totally unscientific scorecard — then hand the verdict over to you: are they good, bad, or simply billionaires?

Here's how to contact the team: email [email protected] or send a text or WhatsApp to +1 (917) 686-1176. Find out more about the show and read our privacy notice at www.bbcworldservice.com/goodbadbillionaire

It’s time to hear what you, our listeners, think of Elon Musk. Journalist Zing Tsjeng and BBC business editor Simon Jack read your feedback to our Elon Musk episode: do you think he’s good, bad, or just another billionaire?

David Geffen is the money man behind Crosby, Stills and Nash, Guns N' Roses, Cher, Shrek, Gladiator, and even Cats the musical. Journalist Zing Tsjeng and BBC business editor Simon Jack tell the remarkable story of the Brooklyn boy who conquered Hollywood and became an entertainment mogul. From starting in a New York agency mailroom to the heart of Laurel Canyon’s hippie-rock scene, David Geffen rubbed shoulders with almost every major cultural figure of the 20th century. Joni Mitchel wrote a song about him, and Cher dated him. Then he moved from the music industry to movies, founding DreamWorks with Steven Spielberg and building one of the world’s most valuable art collections.