We have a great capacity to ignore facts and only believe what we want to believe – particularly if those facts clash with our convictions. Why is that and is it getting worse? It’s an area that is being intensely studied by psychologists, political scientists and neuroscientists.

Ruth Alexander explores why we ignore facts, even if it’s bad for us. Though she also hears how, in some circumstances, it can be good for our mental health. But our casual attitude towards facts can have serious consequences. According to experts this is happening across the world, in politics, in health and in our daily lives. This behaviour is not the preserve of any particular political group – everyone does it when it suits them.

Presenter: Ruth Alexander Producer: John Murphy

(Two heads filled with questions or exclamations. Credit: Getty Images)

Britain is trying to make multiple trade deals since leaving the EU. Some negotiations between countries have lasted for years. The breakdown in the World Trade Organization, the changing nature and complexity of world trade and a general lack of trust between nations means it could be a very drawn out process. Presented by Tanya Beckett.

The Coronavirus outbreak in China has been declared a public health emergency of international concern. It is raising fears of a global disease pandemic. In the past viral infections have killed millions. Possibly the worst ever pandemic was the 1918-19 flu, which spread just as the First World War was coming to an end. Estimates of the death toll now range between 50 and 100 million. At the upper range that means it was more deadly than both World Wars put together. So could another pandemic emerge today and kill millions? How might it happen and how prepared are we to confront it?

The world is a very different place to 100 years ago. Scientific and public health advances do mean some parts of the world are more prepared but our ways of living could make us more susceptible to a new virus.

Speaking to a leading virologist, a disease modeller, a public health policy expert and a senior African health official, Ben Chu asks where the virus threat might come from, how fast it could spread, what containment policies work and whether the world is ready.

Presenter: Ben Chu Producer: John Murphy

(image: Scientist working with a dangerous virus in the laboratory. Credit: Getty Creative)

Could a new law in India be a step towards making Muslims second class citizens? The government says the Citizenship Amendment Act is a humanitarian law giving protection for people escaping religious persecution. But critics say that by excluding Muslims, the CAA contravenes the country’s secular constitution. Charmaine Cozier reports.

(Women hold anti-government placards during a protest in Delhi. Credit: Amarjeet Kumar Singh/Getty Images)

How did Trump’s personality and way of dealing with people lead to a trial in the Senate? The answer involves Trump’s long standing belief in conspiracy theories, his transactional way of doing business, the revolving door of staff turnover at the White House and his admiration for Russian president Vladimir Putin.

With Tanya Beckett.

( President Trump departs the White House on the day of the House Impeachment Vote, Washington DC. Photo Credit: Mark Wilson/Getty Images)

On 25 July 2019, the President of the United States made a phone call to the recently-elected President of Ukraine - congratulating him on his party’s election victory. What Donald Trump said in that call to Volodymyr Zelensky has ended up threatening his own presidency, triggering the impeachment of the president. Donald Trump says his interest was in rooting out corruption. Meanwhile Joe Biden’s role in Ukraine was to do the same - root out corruption. The Inquiry asks why Ukraine has such a corruption problem.

Presented by Ruth Alexander.

(A Ukrainian flag flies in Independence Square in Kyiv, the capital of Ukraine. Photo credit: Pavlo Gonchar/Getty Images)

President Trump’s decision to assassinate Qasem Soleimani came as a shock to America’s foes and allies alike. He was Iran’s top general and has been described as one of the country’s most powerful figures, second only to the Supreme Leader Ayotollah Ali Khamenei. He was, effectively, head of Iran’s foreign policy. He’s been credited as being instrumental in the fight against ISIS but has also been accused of arming and supporting terror groups. But why did Donald Trump order his death?

Presenter: Tanya Beckett Producer: John Murphy

(Image: Lieutenant General Qasem Soleimani / Photo handout from the Iranian Supreme Leader's office)

What is the chance of the human race surviving the 21st century? There are many dangers – climate change for example, or nuclear war, or a pandemic, or planet Earth being hit by a giant asteroid.

Around the world a number of research centres have sprung up to investigate and mitigate what’s called existential risk. How precarious is our civilisation and what can be done to stop a global catastrophe? David Edmonds talks to four expert witnesses to try and find the answer.

(Apocalyptic landscape. Credit: Santoelia/ Getty images)

Despite heroic efforts to vaccinate against this crippling disease, why does it persist? The fight to eradicate polio is an amazing story: It began with a grassroots movement in the United States and led to a global campaign to wipe out a disease that can cause paralysis and even death. There is no cure, but countless cases have been prevented by an extraordinary campaign to vaccinate every child aged five and under. It’s an operation that requires access to some of the poorest and most remote regions of the world.

But polio was supposed to have been eliminated by the year 2000. Nearly two decades later, new cases are still springing up. Why? Neal Razzell examines the challenges and the triumphs in the effort to rid the world of polio.

Donald Trump is threatening to withdraw the US from Nato while the French President Emmanuel Macron has called it “brain dead”. Charmaine Cozier asks if the 70-year-alliance can survive?

She speaks to Jacob Heilbrunn from The National Interest think tank – a right of centre foreign policy think tank based in Washington; Fabrice Pothier - senior defence consulting fellow at the International Institute for Strategic Studies and former Nato policy planning director; Sara Bjerg Moller, assistant professor of international security at the School of Diplomacy and International Relations, Seton Hall University in the US; Elisabeth Braw, senior research fellow, RUSI's Modern Deterrence project

Producer: Helen Grady

(Photo: President Macron, PM Boris Johnson and Canada's PM Justin Trudeau at the Nato summit reception. Credit: Nato TV/AFP/Getty Images)

Excluding dictators and royalty, there are around 2,000 people in the world who are billionaires. Some inherit wealth while others might build fortunes through inventions, businesses or investments. Some say individuals holding onto extreme amounts of money is wasteful because it could be diverted to other areas that would benefit more people such as education and healthcare. Others reason than some billionaires should keep what they have because they drive economic growth and inspire others to innovate. Are billionaires the right focus or should attention move to the systems and processes that enable them to make and keep huge amounts of money?

Experts: Dr Paul Segal Roxanne Roberts Caroline Freund Will Wilkinson

Presenter: Celia Hatton Producer: Charmaine Cozier Researcher: Diane Richardson

(Photo: Billionaire Kylie Jenner arrives at the 2019 Met Gala in New York City. Credit: Karwai Tang/Getty Images)

An estimated 2.6 billion people use social media, but in the online world not everything is what it seems. Fake accounts and automatic programmes can be used to spread disinformation and influence political narratives. We hear from experts across the world about how elections have been fought, and won, with the help of this electronic – and sometimes not so electronic – army. In a world where social media expansion shows no signs of slowing – how do we protect our elections from social media manipulators?

Presenter: Tanya Beckett Producers: Lizzy McNeill & Helen Grady

Experts: Samantha Bradshaw Natashya Gutierrez Idayat Hassan Ben Nimmo