The head of the Roman Catholic Church has been accused of aiding the spread of heresy. A petition criticising the ambiguity of Pope Francis' statements on the treatment of people who have divorced and remarried is the latest twist in a fierce debate which is dividing Roman Catholics. The argument centres on whether divorcees on their second marriages should be able to receive Holy Communion, a ceremony that is central to the Christian faith. However, the dispute goes much deeper than that. At its heart, it is an argument over what it means to be a Roman Catholic and what the role of the Pope, and the Church, should be.

Presenter: Ruth Alexander Producer: James Fletcher and Helen Grady

(Photo: Pope Francis waves to thousands of followers in Manila, Philippines. Credit: Lisa Maree Williams/Getty Images)

From driverless cars to "carebots", machines are entering the realm of right and wrong. Should an autonomous vehicle prioritise the lives of its passengers over pedestrians? Should a robot caring for an elderly woman respect her right to life ahead of her right to make her own decisions? And who gets to decide? The challenges facing artificial intelligence are not just technical, but moral - and raise hard questions about what it means to be human.

(image: PaPeRo communication robot at the Robodex trade show in Tokyo, Japan, 18 January 2017. Photo credit: Tomohiro Ohsumi/Getty Images)

We all do it: ask a search engine things we wouldn’t dare ask a friend, post our lives on social media, hit the ‘agree’ button on privacy conditions we never read. This is life in our online age. To get our favourite apps and services for free, we provide companies with the intimate details of our lives. Businesses we’ve heard of, and many we haven’t, make money off this data in ways we may not fully realise. And almost every week it seems there’s another data breech – Equifax, Sonic, and Deloitte have been hacked in the last month alone. Each time the private data of millions of people is compromised. Can we control who knows what about us? And are we comfortable with how much information we’re giving up and how it might be used, or mis-used? This week the Inquiry asks “Is Privacy Dead?”

(image: Shutterstock)

The list of nations legislating to ban the sale of petrol and diesel cars is growing. But these restrictions won’t come into effect for decades. Air pollution contributes to thousands of early deaths each year and the scandal known as Dieselgate, when vehicle manufacturers admitted tampering with emissions tests, made us more aware of the polluting power of the diesel engine. Automotive technology is advancing quickly, but will greener vehicles really replace the combustion engine? Hybrid and electric cars are better for the environment but more expensive, and petrol stations are easier to find than charging points.

This edition of the Inquiry asks, if we wanted to, could we ban the sale of diesel and petrol cars now?

(image: Cars sit in gridlock in heavy fog (pollution) in Beijing China. Photo Credit: Guang Niu/Getty Images)

North Korea continues to rattle the world with its rapidly advancing weapons programme. Diplomacy with this Hermit Kingdom is broken and UN sanctions have little effect curtailing the nuclear ambitions of the country’s enigmatic leader Kim Jong–Un. As its closest neighbour and biggest ally, can China solve the growing threat - with whatever options remain?

(image: Chinese/N.Korean sign beside the Sino-Korean Friendship Bridge connecting the Chinese border city of Dandong to North Korea over the Yalu river. Credit: Mark Ralston/Getty Images)

Do we have the power to avoid the natural forces of intense rainfall? With rising sea levels and the threat of climate change, the risk of death due to floods seems an insurmountable challenge. But there are some surprising facts in the figures on flood deaths. In developed countries like the US, more men die in floods than women and it is 30% of white men who are of particular concern.

We hear from four expert witnesses from across the globe, who share different options for change. Their ideas are both obvious as well as innovative, both low cost for use in developing countries like Bangladesh and high-tech like in the Netherlands. We also hear from the one place in the world which seems to be saving more lives in the face of devastating floods and storm surges than anywhere else on the planet.

Presenter : James Fletcher Producer: Nina Robinson

(Photo: Officials distribute medicine to villagers affected by the monsoon flooding across India, Nepal and Bangladesh. Credit: Biju Boro/Getty Images)

Cemeteries around the world are fast running out of space. As more and more people choose to live in cities, some can't even cope with the ashes left after cremation. Deep questions about our communities, cultures and mortality emerge as The Inquiry asks: what can we do with our dead?

The programme script says that "only the very wealthiest can afford to rest in the ground in Hong Kong and Singapore". This is true for Hong Kong but Singapore's National Environment Agency has been in touch to say that you do not have to be wealthy to be buried in the government run cemetery.

(image: A crowded cemetery in Hong Kong. Photo credit: Dale De La Rey/Getty Images.)

North America’s most notorious racist group, the Ku Klux Klan fought the end of slavery in the 19th century, opposed civil rights in the 20th century and now forms part of a new extreme-right wing movement protesting openly, on America’s streets. Presented by James Fletcher and produced by Kate Lamble, The Inquiry asks four expert witnesses to answer this pressing question; how has the KKK managed to last so long? The answer can be found by looking at the origins of the KKK and the power of the white supremacist idea which became infamous for its’ distinctive costumes and deadly violence.

The American concept of freedom of speech has also helped give the KKK longevity. The views of the groups’ members are not shut down by the authorities. Rather, the KKK is allowed to speak and operate openly, within certain limits of the law. The hope is that counter protest and dialogue will expose the hatred and bigotry of its members.

Through hearing the views of one reformed racist, we learn how the group have been opportunistic in recruiting members. These include troubled young men, looking for family, security and meaning to their lives.

Finally, modern day technology has helped to spread the KKK’s message throughout the world via the internet. The group has been managed to mobilise and has recently, become emboldened by the election of President Donald Trump.

(Photo: Torchlight Parade by the Ku Klux Klan, October 1951. Photo credit: Keystone/Getty Images)

Video games are a huge industry, bigger than Hollywood, and billions of people around the world play them for fun. But new economic research in the US suggests that young men are dropping out of work to play games more. This is both because some jobs are becoming harder to find and less rewarding, and because video games are becoming more and more attractive. The gamers say they are happy, but the research has sharpened long-standing concerns about video games. Will there be a 'lost generation' of young men sitting in their parents' basements, frittering their lives away on mindless games, with disastrous long-term effects for them and the economy? Are video games a waste of time?

(Photo: A visitor plays on a computer while visiting the Gamescom 2017 video gaming trade fair in Cologne, Germany. Credit: Lukas Schulze/Getty Images)

Smears, bots and bags of cash - we reveal some of the tricks used for fiddling elections around the world. German Chancellor Angela Merkel's security chiefs say Russian intelligence is actively trying to influence next month's German elections. Meanwhile, from the US to the Netherlands, countries are becoming increasingly wary of election interference. So how do you fix someone else’s election? Hear answers from people who've studied it and even been involved.

Presenter: Neal Razzell Producers: Phoebe Keane, Emily Craig Editor: Emma Rippon

(Photo: Voters go to the polls in the contentious presidential election between Hillary Clinton and Donald Trump in Las Vegas, Nevada Credit: Ethan Miller/Getty Images)

A story of crime and often no punishment. South Africa's notoriously violent record has been getting worse. The number of murders and violent crimes is rising as public confidence in the police falls. Officers themselves have been linked to a series of high-profile cases, including spectacular heists at the country's main international airport. South Africa's police minister has called for "a firmer, disciplined force". So, are South Africa's police failing?

(image: A riot police officer gets ready to fire a stun grenade into a crowd during clashes in Johannesburg May 8, 2017. Credit: Gulshan Khan/ Getty Images)

You might think simple rules decide the creation of nation states. You'd be wrong.

There are plenty of people out there who want their own state - like in Iraqi Kurdistan and Catalonia, which both have independence referendums coming up. Yet the national governments in Baghdad and Madrid say the votes - whatever their outcome - won't result in new countries. So how do you start a new country? Making sense of an atlas dotted with exceptions, special cases and lands in limbo, we ask: who gets to have their own country?

(Photo: Young boy holds a pro-Independence Catalan flag (Senyera) during Catalonia National Day. Credit: Quique Garcia/Getty Images)