In one city hit by motorbike theft, volunteers are using social media to fight back.

They decide what you can and cannot see on the world’s biggest social network. Who are Facebook’s content moderators? We speak to a woman who worked in a moderation centre in Germany, often watching violent and pornographic videos and deciding what posts should be deleted.

New figures reveal that same-sex divorce rates are higher among women than among men. Tim Harford discusses why this may be with Marina Ashdade, economist at the Vancouver School of Economics and author of Dirty Money, a book about the economics of sex and love.

In the age of non-stop tweets, news updates and digital distractions, Sandra Kanthal finds out why, in the age of the 280 character polemic, it could be useful to rediscover the ancient art of rhetoric.

(Photo: Close up of an eye. Credit: Getty Images)

In July 2018, a disturbing video began to circulate on social media. In it two women and young children are shown being led at gunpoint by a group of soldiers. The captives are blindfolded, forced to the ground and shot 22 times.

The government of Cameroon initially dismissed the video as ‘fake news’. But through open-source investigations – examining details such as buildings, shadows, and uniforms – BBC Africa found that the blame lay squarely on Cameroonian Forces.

From the 10th July to the 31st of October 1940 the skies above Britain were a battle zone. The German Luftwaffe launched large scale attacks aiming to reach London, they were held back and ultimately defeated by the Royal Airforce which included many nationalities. The bravery of the pilots – known as ‘The Few’ - cannot be disputed but is it really true that the average life expectancy of a spitfire pilot during the Battle of Britain was just four weeks, as is often claimed. Tim Harford and Lizzy McNeill look into the statistics and consider which of the armed forces had the highest death rate.

Those whose job it is to care – doctors, nurses, mothers even – face even more relentless demands on their compassion. Until one day some feel they cannot go on anymore.

(Photo: A still from the video showing the murder of women and children by Cameroonian soldiers)

Why are some Russians put on extremist watch lists for saving or posting memes online? Maria Motuznaya was investigated by police after saving edgy memes on her account on the social network VKontakte. Hundreds of Russians are being targeted for using memes declared to be racist, offensive or against the Russian Orthodox Church. People on the list have their bank account frozen and some face criminal charges. Will a blogger’s campaign make a difference?

(Photo: A pair of hands in handcuffs hold a mobile phone showing the VKontakte website. Credit: Anton Vaganov/Interpress/TASS)

Facebook’s dream of a more open and connected world has turned into a nightmare in Myanmar. The price of a smartphone SIM card dropped from around $200 to $2, and Facebook quickly became the app of choice, but it failed to control hate speech against Rohingyas and had very few employees who could read Burmese. What, following criticism in a UN report, is it doing now?

Is one particular model of car really the safest on the road in the UK, and how can new technology reduce road accidents round the world?

Photo: Rohingya refugees pictured in August 2017. Credit: Getty Images

Earlier this year, a baker in Liverpool in north-west England vented her frustration on Twitter over constantly being asked by social media influencers for free cakes. Many other businesses publicly sided with Laura Worthington, but were they being fair? We investigate the impact of influencers – people with powerful social media followings. What are the rules and ethics around advertising and promotion?

What proportion of your country are immigrants? What proportion of teenage girls give birth each year? Research suggests most people get the answers to these questions, and many others about their own countries, very wrong. Tim Harford interviews Bobby Duffy, Global Director of Ipsos Social Research Institute and author of the book, Perils of Perception: Why We’re Wong About Nearly Everything.

Heartbreak after love lost has been written about for generations in literature and in songs. But what causes this physical feeling of pain? Is it a figment of our imagination, prompted by our society and culture, or can we fall sick or even die from a broken heart?

Photo Caption: Influencer Lisa Linh promotes a number of brands – including hotels and credit card companies

Why are people spending real money to buy land that only exists in virtual reality? In the virtual world of Decentraland, users can build whatever they can imagine. Some hope to make a profit by trading goods and services using the social platform’s own cryptocurrency. Could this be the birth of a new virtual economy or a cryptocurrency bubble waiting to burst?

Could computers do a better job than humans at exposing fake news? Tim Harford interviews Mevan Babakar of the fact-checking organisation Fullfact about the software tools she and her team are building to try to automatically verify statistical claims.

Why would you go to the coldest place on Earth? A place mostly devoid of life, where there are rarely more than a few thousand other humans spread out across a landmass twice the size of Australia. Shabnam Grewal reports on Antarctica whose sublime beauty is matched by its capacity to kill you, very fast.

(Photo Credit: Decentraland.org)

#QAnon is part of an online conspiracy theory firing up supporters of Donald Trump. We trace how it started on fringe message boards and has moved more mainstream, including to the floor of a President Trump rally.

A Twitter debate erupted recently about the number of wildfires in the US and in southern Europe, so we take a look at the numbers to see whether they have increased or decreased. As usual, the story is more complicated than it appears.

Psychologists describe the purpose of boredom as trying to get us to do something else: it can spur us on to more meaningful activity or tempt us into dangerous behaviours. Sandra Kanthal talks with researchers who think boredom is anything but boring.

An update on American conspiracy theorists who deny that twenty-six people, mostly young children, died at Sandy Hook Elementary School in 2012. False rumours that the attacks were staged were pushed by media mogul Alex Jones, and his online news site Infowars. Big social media companies have now shut down Infowars’ and Alex Jones’ accounts. This is an update of a story that was originally broadcast in March 2017.

How do you get a hashtag to trend around the world? We look at the numbers behind the case of a politician who is little known outside the United Kingdom but became a hot topic online.

Lesley Curwen has sailed thousands of miles around Europe on her yacht and knows the strange joy of being out of sight of land. Talking to fellow sea-lovers , she asks why we are drawn to go to sea and put ourselves at the mercy of wind and waves.

Photo: Alex Jones, founder of Infowars

What’s it like to be a young YouTube star? Siblings Jaadin and Arabella Daho's lives have significantly changed since they went viral on YouTube in 2015. At just 10 and 11 years old their videos racked up 17 million views. But along with the money and fame has come abuse, both online and off. How has YouTube stardom affected these teenagers and their family?

Why do so many of us love boats? Lesley Curwen, a proud owner of a yacht, finds out how our love affair with the boat can be a deep, passionate attachment and how in some cultures boats are seen as living things and the best place to create memories far from the busy world of dry land.

(Photo: Jaadin and Arabella Daho shooting one of their YouTube videos. BBC Copyright)