Author: BBC World Service

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Focus on Africa - Nigerian flooding kills at least 200 people

Nigerian officials have warned there's little hope of finding alive around 500 people still missing after flash floods in Niger state. How are survivors coping?

Mauritania’s Sidi Ould-Tah elected as the new president of the African Development Bank. What was the voting process like?

And we meet one photographer who has turned his lens on insects to tell a bigger story

Presenter: Richard Kagoe Producers: Sunita Nahar ,Yvette Twagiramariya and Nyasha Michelle in London. Blessing Aderogba in Lagos Technical Producer: Chris Ablakwa Senior Producer: Paul Bakibinga Editors : Andre Lombard and Alice Muthengi

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Good Bad Billionaire - Eike Batista: Golden grifter

Mining magnate Eike Batista was once Brazil’s richest person, but corruption led to his downfall. BBC business editor Simon Jack and journalist Zing Tsjeng lift the lid on a flashy and eccentric former billionaire who started out in gold mining. Batista then oversaw huge oil, gas and logistics projects but, after his investments crashed, the authorities ordered his arrest. The podcast that tells tales of titans of technology, Wall Street moguls, pop stars, sporting legends, CEOs and entrepreneurs discusses how Batista built the world’s seventh biggest personal fortune while becoming a celebrity playboy in Brazil. Then Simon and Zing decide if he is good, bad, or just another billionaire.

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CrowdScience - What on earth is quantum?

Listener Christine wants to understand one of the strangest phenomena in the universe. But to get to grips with it, she’ll need a crash course in the bizarre behaviour of the very small. Here, things don’t act the way you might expect — and it’s famously hard to wrap your head around.

Anand Jagatia has assembled some of the sharpest minds in the field and locked them in a studio. No one’s getting out until Christine and Anand know exactly what’s going on. Or at least, that’s the plan.

On hand to help are Kanta Dihal, lecturer in science communication at Imperial College London; James Millen, King’s Quantum Director at King’s College London; and particle physicist Harry Cliff from the University of Cambridge.

Prepare to enter the world of the very small—and the very weird—where particles can be in two places at once, influence each other across vast distances, and seem to decide what they are only when observed. Hear how these once-theoretical oddities are now driving a technological revolution, transforming everything from computing to communication.

Presenter: Anand Jagatia Producer: Harrison Lewis Series Producer: Ben Motley

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Focus on Africa - Joshlin Smith: South Africa’s human trafficking problem

A South African woman, Racquel "Kelly" Smith, her boyfriend Jacquen Appollis and their friend Steveno van Rhyn have been given life sentences after being convicted of trafficking her missing 6-year-old daughter, Joshlin Smith. The case has captivated and horrified audiences around the world. It has also highlighted the wider issue of human trafficking in South Africa. An anti-trafficking campaigner responds to the rulling and explains the extent of problem in the country.

Also, Kenya and Mayotte sign a trade deal to boost economic ties. What will be traded?

And a tribute to and an exploration of, Kenya's literary giant Ngugi wa Thiong’o, who has died at the age of 87.

Presenter: Richard Kagoe Technical Producer: Jonathan Greer Producers: Nyasha Michelle, Tom Kavanagh and Amie Liebowitz in London. Charles Gitonga in Nairobi Senior Journalist: Karnie Sharp Editors: Alice Muthengi and Andre Lombard