What does the video-sharing site needs to do in order to stop inadvertently promoting dangerous conspiracy theories and extremist content?

Alex Jones's InfoWars channel (pictured) - which among other things propagated the lie that the Sandy Hook school shooting in the US was faked - has already been banned from YouTube, although his videos still find their way onto the site. Meanwhile the social media platform has also been clamping down on the vaccination conspiracists blamed for causing the current measles epidemic, as well as the far right extremists said to have inspired terrorists such as the New Zealand mosque shooter.

But is the tougher curating of content enough? Or does YouTube's very business model depend on the promotion of sensationalism and extremism by its algorithms? Ed Butler speaks to Mike Caulfield of the American Democracy Project, former Youtube engineer Guillaume Chaslot, and Joan Donovan, who researches the Alt Right at Harvard.

(Picture: Screenshot of an Alex Jones InfoWars video on YouTube, taken on 29 April 2019, despite the banning of his channel by YouTube)

Imagine losing your home, your job or your reputation, all because of a computer error. We speak to people who say that's exactly what happened to them.

Kim Duncan and her children lost their family home in the US after Kim's bank Wells Fargo mistakenly said she didn't qualify for a loan modification she needed to keep up with her repayments. Meanwhile in the UK, the Post Office is being litigated by former employees who were fired and in some cases went to prison after being accused of fraud - they claim because of a bug in the Post Office's accounting software.

Manuela Saragosa asks computer science expert Lindsay Marshall of Newcastle University whether glitches like these are unavoidable. Do they have to be so damaging, and are they likely to become an ever more common bane of our lives?

(Photo: Businessman sitting in a data centre looking frustrated. Credit: AKodisinghe/Getty Images)

Do rent controls and the expropriation of apartment blocks provide an answer to the increasing cost of housing in the rich world?

Such radical measures are being considered in many of the world's biggest metropolises, as more and more residents find themselves being priced out of their home cities.

Manuela Saragosa speaks to Tom McGath of the Berlin-based campaign group Deutsche Wohnen Enteignen, who wants the city authorities to seize ownership of housing from the German capital's biggest landlords. But leading urbanist Richard Florida of the University of Toronto says there are better ways of tackling the shortage, not least taking on the "not in my back yard" brigade.

(Picture: A banner put up by tenants in Berlin protesting against the sale of apartments; John Macdougall/AFP/Getty Images)

Are markets and companies beginning to grasp the threat of global warming? Ed Butler speaks to Meryam Omi, head of sustainability and responsible investment strategy at Legal and General, a major investor, about divesting from companies that contribute to climate change. And Jeff Colgan, director of security studies at the Watson Institute, Brown University, in the US, tells us why he thinks sectors like insurance, property and oil and gas are overpriced given the threat of climate change. Bjorn Otto Sverdrup, senior vice president for sustainability at Equinor, Norway's state-back oil company, outlines what changes his company is making.

Producer: Laurence Knight

(Photo: Climate change protesters in London, Credit: Getty Images)

Periods. We rarely talk about them but half the world's population will have to manage menstruation for a good chunk of their lives.

For some women, their monthly period brings shame and stigmatisation, as they are forced out of their communities. Others simply can't afford the products they need to carry on with their lives.

Ruth Evans reports from Nepal on some of the challenges and the solutions being developed, to help improve the lives of millions.

We also hear from Janie Hampton, of World Menstrual Network, who's calling for drastic change in the way periods are managed, not just in poor communities but in the developed world, too.

(Photo: A Nepalese woman steps out from a 'chhaupadi house' in the village of Achham, Nepal. Isolation is part of a centuries-old Hindu ritual where women are prohibited from participating in normal family activities during menstruation and after childbirth. Credit: Getty Images)

Jane Wakefield reports from the Ted conference in Vancouver.

(Photo: Social media app icons, Credit: Getty Images)

Jane Wakefield reports from the TED conference in Vancouver, Canada, on the businesses shooting for the stars. Chief Executive of Rocket Lab Peter Beck shares his concerns about the amount of space junk being left in orbit. Former astronaut Nicole Stott explains why an ill-fitting space suit can be a big problem. And Assistant Professor of Astrophysics at University of Arizona, Erika Hamden, tells us why space exploration is suddenly cool again.

(Photo: An astronaut in space, Credit: Getty Images)

What's the best way to help sex workers? We hear the cases for full decriminalisation, versus abolition of what's often dubbed the world's oldest profession.

In the Netherlands - a country with some of the most liberal laws on prostitution - a petition is due to be debated in parliament that calls for it to be made illegal to pay for sex. The initiative, spearheaded by young Christians and feminists, has sparked an outcry with many claiming it would actually make life harder for the sex workers it is intended to help, as the BBC's Anna Holligan reports.

It's a controversy we bring back into the BBC studio. Ed Butler hosts a fiery dispute between the British feminist and journalist Julie Bindel, and the Nevadan sex worker-turned-PhD student Christina Parreira, who wants her profession to be treated in law just the same way as any other. Plus Professor Prabha Kotiswaran of Kings College London explains why it doesn't make much difference what the law says, if it is arbitrarily enforced by the police.

Producer: Laurence Knight

(Picture: A group of sex workers and supporters are seen holding a banner during a demonstration in Amsterdam, Netherlands; Credit: Ana Fernandez/SOPA Images/LightRocket via Getty Images)

How the country’s young businesses are making a mark in fashion, beauty, music and tech.

Vivienne Nunis speaks to Humayun Haroon, co-founder of digital music platform Patari; Shameelah Ismail, chief executive of GharPar, a start-up that offers beauty services in the home; Myra Qureshi head of Conatural Beauty, Pakistan's first organic skin and haircare range; and fashion designer Umair Sajid.

(Picture: Humayon Haroon, co-founder of Patari at the company headquarters in Lahore, Pakistan)

How the decline of the local newspaper industry is affecting democracy. Manuela Saragosa speaks to Ken Doctor, former newspaper man and now analyst at his own company Newsanomics, about the scale of decline in local news, particularly in the United States. Researcher Meg Rubado explains how the lack of a local news source is affecting local elections, and Penny Abernathy, professor in journalism and digital media economics at the University of North Carolina, explains why deep cuts are down to a new breed of newspaper owner. What's the solution? In the UK, we hear from Megan Lucero, director of Bureau Local, a project part funded by Google to help local journalists collaborate on stories and share resources.

(Photo: a newspaper press in San Francisco, Credit: Getty Images)

Are fake news and rumours still proliferating on Whatsapp in India? And is this being exploited by candidates as the country prepares to go to the polls?

Pratik Sinha, director of AltNews.in, is fighting an uphill struggle trying to debunk the misinformation and outright deceit they claim can still spread like wildfire among India's 200 million Whatsapp users.

But is fact-checking even the right way to tackle the problem? Or is it just closing the barn door after the fake horse has already bolted? Manuela Saragosa speaks to one sceptic, Rinu Agal of the Indian online news site thePrint.

Meanwhile, Dr Sander van der Linden of the Social Decision-Making Lab at Cambridge University is working with Whatsapp on a possible solution that he believes will inoculate users against viral propaganda.

(Picture: Boys use mobile phones in Delhi; Credit: Nasir Kachroo/NurPhoto via Getty Images)

With Disney and Apple launching their streaming services to rival Netflix, will they struggle to get subscribers, when the market is getting increasingly saturated? Or will people just keep switching and cancelling subscriptions depending what shows are on offer? Presenter Regan Morris is also looking into whether the likes of Netflix have encouraged more diversity among writers and programme-makers who actually secure commissions. We hear from Connie Guglielmo, editor in chief of CNET News; Piya Sinha-Roy, senior writer Entertainment Weekly; Franklin Leonard, film executive who founded the Black List, a networking platform for screenwriters and film and TV professionals and Luke Bouma, founder of Cord Cutters News

PHOTO: Disney sign, COPYRIGHT: Getty Images