Rhinos are at extreme risk of extinction because of poaching and habitat loss. The work of conservationists has made sure that their numbers have continued to rise, but poaching is still a major threat to their existence. Most of the global rhino population lives in South Africa, where the government has taken big steps to prevent the killings, but recent data shows criminal poachers are still targeting the animal

So scientists are getting experimental with how to protect them!

We hear from the BBC Africa’s Ayanda Charlie who has speaking to scientists in South Africa coming up with ways to prevent poaching, including using radioactive material in horns as a deterrent.

Plus, we get the story behind why there’s videos of rhinos hanging upside down from helicopters. Riley Farrell from BBC Future tells us about how choppers are being used in rhino conservation.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Emily Horler and Benita Barden Editor: Verity Wilde

The average person who menstruates has their period for 2,535 days (nearly seven years) of their life, according to the UN. That’s A LOT of tampons and pads. But the World Bank says 500 million women don’t have access to menstrual products. Period poverty - when women and girls can’t afford or access sanitary products - is a global problem, affecting lots of countries in Africa as well as the US, UK, India and New Zealand.

Gloria Achieng, a BBC journalist in Kenya, talks us through the causes of period poverty and some of the reusable products available. Patricia Kajumba, founder of Glow Up Pads in Uganda, explains how her reusable pads are making a difference and Geena Dunne from the Cova Project in Australia tells us about their menstrual cups. BBC Health reporter Michelle Roberts breaks down some of the myths surrounding period products.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Mora Morrison and Hayley Clarke Video Journalists: Gabriel Purcell-Davis and Adam Chowdhury Editor: Verity Wilde

President Trump and his administration is cracking down on international students who have been active in protests against Israel on university campuses.

Last week, the US Secretary of State Marco Rubio said at least 300 students had their student visas revoked.

Trump officials said the Immigration and Nationality Act allows the State Department to deport non-citizens who are "adversarial to the foreign policy and national security interests" of the US.

The arrests are a part of Trump's pledge to combat what the administration has classified as antisemitism on university campuses, which was written into an executive order in January.

Nathalie Jimenez, our reporter in the US, takes us through what we know about two of the most prominent cases.

And Jake Horton from BBC Verify, explains some of the key terms you need to know.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Emily Horler and Benita Barden Editor: Verity Wilde

In this episode we’re tracing the route of a shadow ship. These ships are part of a network carrying Russian oil around the world - in violation of international sanctions. And some of them have been accused of sabotage, severing undersea cables that connect European countries. The “shadow fleet” is growing in size and posing a risk to other ships and the environment.

BBC journalist Emilia Jansson explains what shadow ships are and what some Scandinavian countries are trying to do about them. And we hear from BBC journalist Tim Whewell who travelled to the Laconian Sea, where shadow ships frequently carry out ship-to-ship transfers of cargo.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: William Lee Adams Producers: Emilia Jansson and Julia Ross-Roy Editor: Verity Wilde

Myanmar is reeling following a powerful earthquake on Friday. The epicentre was near the second largest city Mandalay, home to about 1.5 million people. According to the government, more than 2,000 people have been killed. The country is already in the midst of a worsening humanitarian crisis and civil war. It’s also ruled by a military junta who control almost all the media. We hear from Soe Win Than, the editor of the BBC’s Burmese service, about why it’s difficult to get all the information.

Tremors were also felt in Thailand - where thousands were evacuated from cracked buildings and at least 20 people have died.

Myanmar is considered one of the world’s most geologically active areas and prone to serious natural disasters. We speak to Stephen Hicks, a seismologist and research at University College London, about why earthquakes are so hard to predict.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Emily Horler and Benita Barden Editor: Verity Wilde

US Vice-President JD Vance and his wife Usha are scheduled to land in Greenland on Friday afternoon. Their visit comes as President Donald Trump continues his threats to take over the world’s largest island, which is a semi-autonomous territory of Denmark. But the planned visit has been scaled back following protests. Rather than visiting a dog sled race and cultural sites, the Vances will instead tour an American space facility. BBC journalist Laura Gozzi explains the basics of what the United States would gain if Greenland became part of the U.S. And we also hear reaction from two 26-year-old Greenlanders, as we try to understand how local people feel about the latest developments.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison and Elena Angelides Editor: Verity Wilde

The global hair wig and extension market was valued at $7.5billion in 2024. Hair is big business - especially in India, which is the world’s biggest exporter of human hair, supplying 85% of global demand. Some comes from temples, where people shave off their hair as an act of devotion to the gods. It is then sold at auction. The rest comes from hair pickers who collect it from women’s combs, salons and even rubbish dumps.

Priti Gupta, a journalist in Mumbai, talks us through the Indian hair industry. We ask why Indian hair is so sought after - and why it’s China that’s leading the wig export market, instead of India. BBC journalist Nadia Gyane explains where this hair ends up - and if customers know or care where their hair comes from? And drag artist Zeeshan Ali in Mumbai tells us why wigs are so important to their act.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison, Elena Angelides and Julia Ross-Roy Video Journalists: Baldeep Chahal and Kesewaa Browne Editor: Verity Wilde

Thousands of people in Turkey turned out for a seventh night of protests which have so far seen more than 1,400 people detained, including students, journalists and lawyers. Demonstrations began in Istanbul on 19 March, when the city's Mayor Ekrem Imamoglu - who is seen as President Recep Tayyip Erdogan's main political rival - was arrested on corruption charges.

In this episode we bring you the background to the protests. Nihan Kalle, a reporter for BBC Monitoring in Istanbul, tells us why President Erdogan is still popular after 22 years in power and why Ekrem Imamoglu is seen as a threat to him. BBC Turkish reporter Özge Özdemir explains the state of democracy in Turkey right now. And we hear directly from some of the student protestors - what changes do they want to see in Turkey?

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison, Julia Ross-Roy and Maria Clara Montoya Editor: Verity Wilde