Food production accounts for as much global greenhouse gas emissions as all forms of transport combined. That’s why many scientists think we can’t tackle climate change without addressing what we eat. So – in this week’s repeat Inquiry – we’re looking at alternative climate-friendly diets and asking what it would take to move the world towards them. Presenter: Helena Merriman (Photo: Friends having a vegetarian meal. Credit: Shutterstock)

The world’s two biggest economies are on the brink of a costly standoff. The US has announced tariffs of 25% on a swathe of Chinese goods, starting July 6th. China has vowed to respond in kind. ‘If someone wants a trade war,’ China’s Commerce Minister said, ‘we will fight to the end.’ President Trump is bullish, threatening further tariffs and tweeting: ‘trade wars are good, and easy to win.’ But the WTO has warned that a trade war would have a ‘severe’ impact on the global economy. We look at the forces driving the conflict and how each side might back down. With Helen Grady.

(Image: Cargo containers with USA and Chinese flags on their sides crashing together. Credit: Shutterstock)

Donte Robinson and Rashon Nelson were waiting to meet a business associate in Starbucks. After two minutes, the store manager called the police and the African-American men were removed from the café in handcuffs.

The Starbucks CEO has described the incident as “racial profiling”, claiming that the manager acted on unconscious racial bias. In response, he closed 8,000 branches of the coffee giant so his staff could attend anti-bias training.

It’s not just Starbucks - diversity training, such as this, has become a multi-million dollar global business. On this week’s Inquiry, we examine why these biases are so ingrained and what we can do to eradicate them.

(Photo: Two little boys on the grass. Credit: Shutterstock)

More than half the world’s countries are not producing enough babies to offset the number of deaths. Russia is the latest to experience a dip in the fertility rate, despite the government rolling out measures to encourage people to have more children. They have tried mortgage subsidies, giving couples days off to have sex, and rewarding fruitful mothers with the grand prize of a refrigerator. But the fertility rate continues to drop.

It is a situation that governments in Spain, Singapore, Germany, South Korea and Japan all face. Many are calling this a demographic crisis, so this week we are asking how do you make people have babies?

Presenter: Helena Merriman Producer: Xavier Zapata

(Photo: Smiling baby, Credit: Shutterstock)

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)