From boosting muscle mass to improving metabolism and skin, there’s now tonnes of claims about what peptides can do on social media. Peptides are short amino acids produced by our bodies naturally, and they aren’t a new concept, they’ve been used in medicine for centuries, Insulin, used to treat diabetes being the most common one.

But the peptide wellness shot craze has led to growing amount of people buying ‘research peptides’ which are unregulated and not approved for human use. BBC’s health and wellbeing reporter, Ruth Clegg tells us all about the grey market of research peptide drugs, the health risks of taking them and why people are opting to become peptide ‘lab-rats’ despite this.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Emily Horler, Benita Barden and Mora Morrison Editor: Verity Wilde

For the first time in more than 50 years, NASA is taking humanity back to the moon with its Artemis II mission. The crew is made up of four astronauts, including the first woman astronaut and the first black astronaut to travel to the moon. They will blast off from the Kennedy Space Center in Florida, in a spacecraft never used by humans before, and begin their journey to orbit around the moon.

The launch is expected to happen on 1 April - but NASA are keeping their options open, and have named six other potential dates. So - when will the launch take place? And once it does, how long will it take the mission to reach the Moon?

The BBC’s science correspondent Georgina Rannard unpacks it all for us — and tells us everything we need to know about this historic mission. And we hear from two members of the Cosmic Girls Foundation - Vanessa from Finland and Ximena from Venezuela - who share their reaction to the mission and their hopes for how it could push the boundaries of science.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams and Chelsea Coates Editor: Verity Wilde

Imagine being able to understand what animals are saying - and potentially even talking back. Animal-to-human communication is a subject which has garnered a lot of attention in recent years. And now artificial intelligence (AI) is turbo charging the conversation.

The BBC’s Caroline Steel chats us through the basics of animal communication, how technological advancements have helped humans understand them, and what the next phase of this could look like. David Gruber from Project CETI also shares his team’s pioneering efforts to understand sperm whales. Plus, vet Haehyun Shin shares how her work would be impacted if she could understand her pet patients.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Mora Morrison and Chelsea Coates Video producer: Tim Hodges Editor: Verity Wilde

The United Nations has voted to recognise the transatlantic slave trade as the “gravest crime against humanity”, after a proposal from Ghana. It comes after years of campaigning from African and Caribbean nations, calling for reparations for the largest long-distance forced movement of people in recorded history.

But not all governments supported the vote. The US, Israel and Argentina voted against it and 52 countries - mostly members of the EU - decided not to take part. The wording of the resolution has received criticism, with some arguing it implies that some crimes against humanity are worse than others.

So what does this vote mean - and how could it change the way we look at this chapter of history in the future?

BBC Africa reporter Daniel Dadzie joins us for this episode to explain it all - along with two students based in Accra, Malisecullen and Abena. We also hear from Meghan in the US, who shares her thoughts on her country rejecting the vote.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Mora Morrison, William Lee Adams and Chelsea Coates Editor: Verity Wilde

A 20 year old woman in the US has successfully sued Meta and YouTube over her childhood addiction to social media, winning $6million in damages.

Jurors found that Meta, which owns Instagram, Facebook and WhatsApp, and Google, owner of YouTube, intentionally built addictive social media platforms that harmed her mental health.

This result is likely to have implications for hundreds of similar cases now winding their way through US courts. Meta and Google said they disagreed with the verdict and intended to appeal.

In this episode BBC tech correspondent Joe Tidy explains the arguments made in the trial and whether this decision could lead to any changes in the way they work. And we hear your views on whether you think these apps are addictive and what you make of the ruling.

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

Ryan Reynolds and Wrexham, Michael B Jordan and AFC Bournemouth, Snoop Dogg and Swansea City FC. And now YouTuber KSI and Dagenham and Redbridge. There’s a growing list of celebrities investing in lower league English and Welsh football clubs. But is this a good thing for the clubs? And how much influence do these celebs actually have? Emma Middleton from BBC Sport explains. We also hear from some fans around the world.

It’s not just English and Welsh football. Celebrities are also buying into American football teams, Formula One and cricket with the Indian Premier League. Journalist Janhavee Moole tells us about the situation in India.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Benita Barden, Chelsea Coates and Julia Ross-Roy Video producer: Tim Hodges Editor: Verity Wilde

The war in Iran isn't just affecting people in countries directly involved in the conflict. It has driven up oil prices around the world, impacting the lives of people from the Philippines and India to Nigeria. Nick Marsh, our Asia business correspondent, explains how some governments are reacting.

Plus we hear from Azadeh Moshiri, our correspondent in Dubai. She explains how Iran’s strikes on the UAE have impacted its reputation.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: William Lee Adams and Ash Mohamed Editor: Julia Ross-Roy

South Africa is facing a water crisis. South Africa is one of the driest countries in the world. It relies on its rainwater, levels of which are unpredictable, unevenly distributed, and decreasing as a result of global warming. But the main issue contributing to water shortages is ageing infrastructure; rusting pipes that break and leak. And there are also allegations of theft by “water tanker mafias”.

The BBC’s Mayeni Jones has been to a part of South Africa that’s been badly affected by droughts and water shortages to investigate these groups. She explains how they operate and what the government is doing to try to tackle the water mafia. And we hear from young South Africans who are affected by the water shortages.

Instagram: @bbcwhatintheworld Email: whatintheworld@bbc.co.uk WhatsApp: +44 330 12 33 22 6 Presenter: Iqra Farooq Producers: Emily Horler, Mora Morrison, Chelsea Coates and Ash Mohamed Video producer: Tim Hodges Editor: Verity Wilde