A special vote is taking place in Australia this weekend asking people whether Australia's constitution should be changed. The referendum seeks to create a body called the Aboriginal and Torres Strait Islander Voice, which would allow Australia’s Indigenous communities to advise the government on issues that impact their lives.

Tiffanie Turnbull, a BBC reporter based in Sydney, explains how the referendum came about, why people are campaigning for and against it, and how it has stoked racism and tension.

(09:40) In gaming news, Microsoft has been cleared to buy Call of Duty maker Activision Blizzard. That's after the U.K.'s competition regulator blocked the original $69bn bid back in April. Alex from the What in the World team explains what it all means.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenters: William Lee Adams with Tiffanie Turnbull Producers: Alex Rhodes and Maria Clara Montoya Editors: Verity Wilde and Simon Peeks

Colombia is one of the most biodiverse countries in the world. But it’s also the most dangerous to be an environment activist. A report from Global Witness, a non-governmental organisation, says Colombia has the highest number of murders of green activists anywhere in the world.

The BBC’s Maria Clara Montoya has spoken to two young climate defenders - why are they at risk and what is being done to protect them?

(09:20) Also, scientists in the US are analysing dust collected from the Bennu asteroid - one of the most dangerous rocks in the solar system. Our Science Editor, Rebecca Morelle, takes us through what experts have learnt so far.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenters: Hannah Gelbart with Maria Clara Montoya Producers: Emily Horler, William Lee Adams, and Benita Barden Editors: Simon Peeks and Verity Wilde

It starts with downloading an app but pretty soon some scammers are going through your data, messaging your contacts, threatening you with violence and destroying your life. Poonam Agarwal from the BBC Eye Investigation team tells us about the blackmailers and the string of at least sixty suicides they’re connected to.

Plus: How do young women in Afghanistan get an education when they’re banned from going to secondary school by the Taliban? We hear about Dars, the BBC programme that offers lessons online and through TV and radio. Mariam Aman, one of the show’s producers, and Shazia Haya, a Pashto-language co-host, tell us more.

If you’ve been affected by issues discussed in this episode, details of organisations offering information and support are available at bbc.co.uk/actionline.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams and Alex Rhodes Editors: Verity Wilde and Simon Peeks

China is in the middle of a housing market crisis. Two of its top property developers, Evergrande and Country Garden, are struggling to pay back debt or fulfil their promises to build properties they have already sold to millions of people.

Fan Wang, a BBC reporter in Singapore, tells us about societal pressures young people face to be home owners in China.

Chen Yen, a journalist at BBC’s Chinese service in Hong Kong, takes us through the details of the housing market.

And as China is the world's second-largest economy, what kind of damage could a collapse of its property market cause? Nick Marsh, our Asia Business Correspondent explains how concerned we should be.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Emily Horler, Benita Barden and Julia Ross-Roy Editors: Verity Wilde and Simon Peeks

Over the weekend, partygoers at a festival in Israel’s Negev desert were attacked by gunmen, with hundreds killed and taken hostage. At the same time, rockets hit cities across Israel and people barricaded themselves into their homes for safety.

The attacks were carried out by the Palestinian militant group Hamas. They bulldozed the separation barrier between Israel and Gaza and targeted Israel from all angles. In response, Israel has launched a wave of air strikes on Gaza and says the country is at war.

Israelis are comparing the scale of these events to the 9/11 attacks in the United States. Survivors in Israel and Gaza talk about what they saw and how they’ve been affected.

We also break down the region’s complicated politics and geography, with the BBC’s International Editor Jeremy Bowen explaining what this means for Israel and Gaza, and Security Correspondent Frank Gardner asking: how did Israel not see this coming? And what happens next, with so many people taken hostage?

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams and Maria Clara Montoya Editors: Verity Wilde and Simon Peeks

It’s nearly three decades since the drive-by shooting that killed rapper Tupac Shakur in Las Vegas. Now Duane ‘Keefe D’ Davis has been arrested and charged as a suspect. Police say they now have enough evidence after Keefe D wrote a memoir detailing his involvement in the act.

Sam Granville, a BBC producer in the Los Angeles bureau takes us back to September 1996 to explain what happened that night. She tells us who Keefe D is, and describes the links he had to Tupac.

Journalist Nicolas Tyrell-Scott also talks us through 2Pac’s legacy and impact not only in hip-hop but in Hollywood and culture.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Julia Ross-Roy, Benita Barden and Mora Morrison Editors: Verity Wilde and Simon Peeks

Thousands of people have been out on the streets of Ghana and organising protests online, using #OccupyJulorbiHouse. In 2019 - just four years ago - Ghana had the fastest growing economy in Africa. But now it’s in crisis, with high inflation and huge debts. Daniel Dadzie explains what in the world is going on with protests in Ghana? And from Jakarta, the BBC’s Astudestra Ajengrastri tells us about her trip to Rempang island, where the Indonesian government is planning a huge development called Eco City. It’ll involve a Chinese glass factory and the eviction of 7,500 residents. How Eco is it?

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: Mora Morrison, Benita Barden and Julia Ross-Roy Editors: Verity Wilde and Simon Peeks

Thousands of people - including politicians, students and journalists - are killed in drug cartel violence in Mexico every year.

One of the biggest cartels is Sinaloa. Joaquín "El Chapo” Guzmán led the cartel until he was jailed in 2019. He’s currently serving a life sentence. His wife, Emma Coronel, has been released from a three year jail term after pleading guilty to drug trafficking charges. But how involved was she and how did she reach ‘narco queen’ status?

Blaire Toedte, a BBC reporter in Miami, tells us about Emma Coronel’s involvement in cartel crime, her ‘buchona’ style, and the impact drug cartel violence has around the world.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart and Alex Rhodes Producers: Emily Horler, Benita Barden and Julia Ross-Roy Editors: Verity Wilde and Simon Peeks

Niger and Gabon are the latest countries in Africa's Sahel to experience military coups. But that’s not the only issue that is facing the area.

Beverly Ochieng from BBC Monitoring in Nairobi explains why several countries in the region are among the worst on the Global Terrorism Index from the Institute for Economics & Peace. And we look at which militant groups operate in the region, why France has faced hostility and backlash in a number of countries, and how the Wagner Group — a group of soldiers-for-hire from Russia — are exploiting existing tensions to gain a foothold in the region.

We also hear more about a new and cheaper malaria vaccine that can be produced on a massive scale. BBC Health & Science correspondent James Gallagher explains why people are hopeful this might save hundreds of thousands of lives.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams and Mora Morrison Editors: Verity Wilde and Simon Peeks

A decades-long territorial dispute between Armenia and Azerbaijan, over the Nagorno-Karabakh region has flared up. Now nearly the entire ethnic Armenian population living there has fled.

The United Nations has sent its first mission to the territory in about 30 years to assess the humanitarian situation. Azerbaijan has been accused of ethnic cleansing - which it denies.

Alex Rhodes, from the What in the World team, takes us through the history of the region and runs through what’s been happening in recent weeks.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart and Alex Rhodes Producers: Emily Horler and Benita Barden Editors: Verity Wilde and Simon Peeks

A truckload of rubbish enters the ocean every minute. Boyan Slat is on a mission to remove it. He’s the founder of The Ocean Cleanup, one of the organisations ridding the oceans of plastic.

But how does so much rubbish end up in the ocean to begin with? Boyan explains.

One solution is to stop the flow from polluted rivers. You may have spotted clean-up videos on TikTok, especially in Bali. We speak to local Giri Winckler who is picking up plastic piece by piece.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenters: Alex Rhodes with Mora Morrison Producer: William Lee Adams Editors: Verity Wilde and Simon Peeks

Our phones are powered by teeny tiny semi conductors. Taiwan produces over 60% of them. Huawei recently unveiled a phone with a chip made in mainland China. Chris Miller is an expert on this subject. He tells us why the United States is wary of this move.

We know our phones have a chip in them, but what’s it made of? And what else is in our phones? They’re built with metals and materials from some of the poorest countries in the world. They’re also designed to be difficult to recycle, leading to lots of technology waste. The BBC’s Science Correspondent, Victoria Gill, explains why our phones are made this way and what their life cycle is.

Email: [email protected] WhatsApp: +44 0330 12 33 22 6 Presenter: Alex Rhodes Producers: Emily Horler, Benita Barden and Julia Ross-Roy Editors: Verity Wilde and Simon Peeks