Focus on Africa - Why Mali seized gold from a mining giant.

Canadian mining giant Barrick halted its operations in Mali after the government seized gold stocks worth $245 million.

What's the story behind the Nigerian words added to the Oxford English dictionary ?

And what the death of the warlord turned politician Prince Yormie Johnson means for Liberia.

Presenter: Audrey Brown Producers: Frenny Jowi in Nairobi with Victor Sylver, Blessing Aderogba, Rob Wilson, and Nyasha Michelle in London. Senior Producer: Paul Bakibinga Technical Producer:Craig Kingham Editors : Andre Lombard and Alice Muthengi

Unexpected Elements - Circles, circumferences and Covid

After the comic malfunctions of a self-driving car, which drove its passenger/prisoner in endless circles, Unexpected Elements rounds its attention on the humble circle. Explore how one man calculated the circumference of the Earth 2,000 years before GPS was invented, then be spellbound by the Magic Circle and the mysterious woman who broke into it. And as we hit the five-year anniversary of the Covid pandemic, we take a look at the cycle of infection and mutation, before asking, 'why don’t we have one antiviral pill that kills them all?' We’re joined by evolutionary psychologist Professor Robin Dunbar, who calculated Dunbar’s number; that is, the maximum number of folks you can hold onto in your circle of friends... five? 500? 5,000? Robin reveals how many REAL friends science says you can have. Presenters: Marnie Chesterton, with Camilla Mota and Phillys Mwatee Producers: Harrison Lewis, with Alice Lipscombe-Southwell and William Hornbrook

Science In Action - AI antivenoms and vegetarian hominids

New types of snake-bite anti-venoms are designed by AI. Also, how much meat did human ancestors eat? How the Baltic Nord Stream gas pipeline rupture of 2022 was the biggest single release of methane ever caused by humans, and that Pluto met Charon, not with a bang, but more of a kiss.

Using a high precision technique for spotting different isotopes of Nitrogen, Tina Lüdecke of the Max Planck Institute for Chemistry has concluded that a group of early hominin Australopithecus living in South Africa were predominantly vegetarian, putting the date that human ancestors started eating meat (and thence growing bigger brains) to more recently. The technique, she thinks, can enlighten prehistoric food webs and ecologies from millions of years ago.

Last year’s Nobel prizes showed the potential new techniques of AI to design synthetic proteins. Timothy P Jenkins and colleagues decided to try designing treatments for snakebite venoms, with remarkable apparent success. It could save many thousands of lives a year.

Since the September 2022 explosions at the Nord Stream gas pipeline in the Baltic sea, many different analyses of how much methane was released have provided a variety of estimates. This week, scientists at the UNEP International Methane emissions observatory – including Stephen Harris - published a study estimating it to be a little under half a million tonnes, making it by far the single biggest human caused release of this most dangerous greenhouse gas. Yet, they say, even that is a tiny fraction of what is released overall around the world every year.

And Finally, a new analysis of the original formation of the Pluto-Charon binary Dwarf Planetary system suggests they – and possibly many other Kuiper belt pairing – were born of a gentle astronomical dance and a peck on the cheek, rather than the catastrophic collision we associate with the earth-moon’s fiery first date. And it may have lasted just a matter of days, according to author Adeene Denton of the University of Arizona.

Presenter: Roland Pease Producer: Alex Mansfield Production Coordinator: Jana Bennett-Holesworth

(Photo: Gorilla feeding. Credit: WLDavies/Getty Images)

Focus on Africa - What next for Mozambique?

Mozambique’s new president, Daniel Chapo, has been sworn in, after winning a violently disputed election held in October last year. Many people have been killed in clashes with the police and the opposition is still calling for protests. So what next for Mozambique under President Daniel Chapo?

How will the China-based online giant Temu, now operating in Nigeria, affect similar local companies?

Also in the podcast, we hear from the Kenyan woman who spent eight years in a Malaysian prison – more than three of them on death row – after being convicted for trafficking drugs, but was released when an appeals court accepted she was an ‘innocent carrier’.

Presenter: Audrey Brown Producers: Yvette Twagiramariya, Stephania Okereke, and Sunita Nahar in London. Frenny Jowi was in Nairobi Senior Producer: Patricia Whitehorne Technical Producer: Gabriel O'Regan Editors: Andre Lombard and Alice Muthengi

Focus on Africa - What next for Mozambique?

Mozambique’s new president, Daniel Chapo, has been sworn in, after winning a violently disputed election held in October last year. Many people have been killed in clashes with the police and the opposition is still calling for protests. So what next for Mozambique under President Daniel Chapo?

How will the China-based online giant Temu, now operating in Nigeria, affect similar local companies?

Also in the podcast, we hear from the Kenyan woman who spent eight years in a Malaysian prison – more than three of them on death row – after being convicted for trafficking drugs, but was released when an appeals court accepted she was an ‘innocent carrier’.

Presenter: Audrey Brown Producers: Yvette Twagiramariya, Stephania Okereke, and Sunita Nahar in London. Frenny Jowi was in Nairobi Senior Producer: Patricia Whitehorne Technical Producer: Gabriel O'Regan Editors: Andre Lombard and Alice Muthengi

Focus on Africa - Bodies retrieved from South African mine

Dozens of survivors and dead pulled from an abandoned South African gold mine

How Russia is expanding its partnership in Africa's nuclear sector

And ice hockey gains popularity in Kenya.

Presenter: Audrey Brown Producers: Victor Sylver, Nyasha Michelle, Priya Sippy and Sunita Nahar Senior Producer: Paul Bakibinga Technical Producer: Chris Kouzaris Editors: Andre Lombard and Alice Muthengi .

Focus on Africa - Kenyan court rules suicide criminalisation unconstitutional

Kenya's high court has struck down a law that criminalised the act of attempting suicide. We hear from one of the petitioners who brought the challenge, on why the judge's ruling is important.

Also in the podcast, we revisit the dumpsite in the Ugandan capital, Kampala, that collapsed and killed more than 30 people last August. How is the city managing its waste problem?

And a shop owner tells us about the devastating impact of a fire at one of the biggest open air markets in Ghana, and efforts to rebuild the area.

Presenter: Audrey Brown Producers: Yvette Twagiramariya, Bella Hassan and Sunita Nahar in London. Frenny Jowi was in Nairobi Senior Producer: Patricia Whitehorne Technical Producer: Gabriel O'Regan Editors: Andre Lombard and Alice Muthengi

Focus on Africa - MSF suspends activities in Khartoum hospital.

Medical charity Médecins Sans Frontières (MSF) pulls out of the largest free hospital in Sudan’s capital Khartoum.

Fears over a cargo of explosive fertiliser in a harbour in Ivory Coast

And who are the Baye Fall muslims in Senegal?

Presenter: Audrey Brown Producers: Amie Liebovitz and Nyasha Michelle in London and Blessing Aderogba in Lagos. Senior Producer : Paul Bakibinga Technical Producer: Francesca Dunne Editors: Andre Lombard and Alice Muthengi

Global News Podcast - The Global Story: The fight for the Arctic

Donald Trump has repeated his desire to control Greenland as a matter of national security, targeting Russian and Chinese interest in the Arctic. Competition is heating up over shipping routes and stores of natural resources.

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 World Service. For more, go to bbcworldservice.com/globalstory or search for The Global Story wherever you got this podcast.