Last year, the world watched as Islamic State was driven from Raqqa, the city they claimed as their capital. The UN has estimated that around 80% of the city’s buildings were destroyed or damaged in the battle. Eight months later, many Raqqans are returning home. Amid the rubble, life is slowly returning to Raqqa. This week, we investigate what life is like after Islamic State.(Picture: A view of destroyed buildings at the frontline in Raqqa, Syria October 16, 2017. Credit: Reuters / Erik De Castro)

Chicago resident Robert McDaniel was surprised when a police commander showed up at his home to warn him that they were watching him. With only a misdemeanour conviction and arrests for a number of suspected minor offenses, he had somehow made it onto the Chicago Police Department’s so called ‘heat list’ - a list of names created by algorithm of those deemed to be most at risk of either being a victim or perpetrator of violent crime. In this Inquiry we look at whether computers can predict future of when, where and by whom crimes will be committed. Can analysing ‘big data’ help target scarce resources in more intelligent ways? Or are the algorithms exacerbating the already heightened tensions between police and the public? How effective are some of the ‘predictive policing’ systems already in use? The inner workings of many of these programmes are protected by private copyright laws too so how can you challenge the decision made by a secret algorithm?(Photo:Chicago Police officers standing next to a police car and a taped off crime scene. Credit: Joshua Lott/AFP/Getty Images)

North Korea has been under sanctions for many years. But this isolated economy is showing signs of life that might surprise you. From hacking and counterfeit money to coffee shops in Pyongyang, we investigate what life is like in North Korea and how the state makes its money.Presenter: Celia Hatton Producer: Josephine Casserly(Photo: A woman shopping at the Kwangbok, or 'liberation', department store in Pyongyang. Credit: Ed Jones/AFP/Getty Images)

Armenia's recent successful uprising is being celebrated as unprecedented for a former Soviet state. The so-called “velvet revolution” began on the last day in March with a protest walk. It ended two weeks and 100km later with the government overthrown.Yet revolutions rarely triumph. In this Inquiry we look at the factors that need to come together for such a revolution to succeed. Do they always need to be bloody and brutal or can non-violence resistance be as effective? How important are state institutions like the military to determining success? And what role do international relationships have to play?(Photo: Supporters of Armenian opposition leader Nikol Pashinyan celebrate at the central square of Yerevan, 2 May 2018. Credit: Vano Shlamov/AFP)

Not long ago, they were calling each other names and raising fears of a nuclear war. Now, it is feasible they could together win the Nobel Peace Prize - if they can reach a deal. The mooted meeting between America’s Donald Trump and North Korea’s Kim Jong Un could go wrong in many ways. Mr Trump has already talked of walking out. But in a spirit of optimism, this week’s Inquiry hears from those who have brokered some of the world’s most unlikely pacts for advice on how to strike the deal of a lifetime. With Helena Merriman.(Photo: President Trump, Credit: Zach Gibson/Getty Images; Photo: Kim Jong Un, Credit: Korea Summit Press Pool/Getty Images)

In late December 2017, one of the world’s leading neurobiologists died of pancreatic cancer. His name was Ben Barres. He was an extraordinary scientist, advancing our understanding of how the brain works, in particular how certain cells in the brain may contribute to degenerative brain diseases like Alzheimer’s and Parkinson’s.He had also lived the last 20 years of his life as a transgender man. He used his unique perspective of having ‘lived in the shoes of a woman and…the shoes of a man’ to become an outspoken opponent of gender bias.As the voice of the transgender community continues to grow in influence, what can wider society learn from people who’ve been in this rare position of living life as both a perceived man and woman? What does their experience tell us about the nature of gender bias? And does it help us fix it?(Photo: People hold a giant transgender flag at a gay parade. Credit: Bulent Kilic/AFP/Getty Images)

Black infants in America are twice as likely to die in their first year as white infants. This stark disparity has long puzzled doctors and researchers. Why are so many African-American babies dying?(Photo: A medical assistant measures the head of a newborn baby during a check-up in the USA. Credit: John Moore / Getty Images)

Syria, Salisbury, Malaysia Airport – all sites of nerve agent attacks carried out in the past couple of years. Yet hundreds of countries have supposedly destroyed their stockpiles of chemical weapons. It’s also illegal to produce and use them.We look to four of the world’s most experienced chemists and researchers to tell us more about the nerve agents used in these recent attacks, how they are regulated and the ongoing problems of getting rid of them.(Photo: Members of the emergency services in green biohazard encapsulated suits. Credit: Ben Stansall/AFP/Getty Images)

China’s ivory market is now closed for business. The country has long been one of the world's biggest consumers of ivory. But as of this year, buying and selling ivory in China is illegal. Carving factories, workshops and jewellers have all shut their doors. How did this happen? And will it be enough to save the African elephant?(Photo: An African Elephant throws mud onto himself, Mpala Research Centre, Kenya. Credit: Simon Maina/Getty Images)

When Robert Mugabe was deposed last year, he had ruled Zimbabwe for nearly four decades. How do dictators and authoritarians stay in power? James Tilley, a professor of politics at Oxford University in the UK, finds out what's in the dictators' survival guide. How do they control ordinary people and stop revolts? How do they stop rivals from taking over? And why are elections often helpful to securing their rule? Producer: Bob Howard.(Photo: Zimbabwean President Robert Mugabe looks on during his inauguration and swearing-in ceremony on August 22, 2013 Credit: ALEXANDER JOE/AFP/Getty Images)