What matters to Australians?

US-Mexico relations hit new low. Brexit and the war on human rights. Was Versailles really to blame for Nazism?

A revolution in astronomy brought a slew of trail-blazing female astronomers to the centre of the drive to find what stars are made of. The Koh-i-noor diamond is a genuine rock star with a long, dramatic, bloody and sometimes tragic history.

Yanis Varoufakis on populism in Europe. Graeme Wood on his new book on encounters with Islamic State, The Way of the Strangers and Alan Keenan of Crisis group on the spread of radical Buddhism in Asia.

Bruce Shapiro brings us his impressions of the first days of the Trump presidency, Oliver Bullough brings us up to date on what Putin has been up to and a journey into China after the opium wars when Christian missionaries were first able to get into the Celestial Kingdom.

President Trump is already at war with his own intelligence agencies - and with the country's media. Guests Jeff Stein (Newsweek) and Andrew Solomon (PEN America) talk about what's at stake when it comes to the both the intelligence and media establishments.

Peter Wohlleban says that trees and plants have feelings and are able to talk to each other. His book, The Hidden Life of Trees, builds on his work as a forest ranger in Germany where he introduced ground breaking changes to the way forests are managed.

How United States foreign policy interests shaped the creation and expansion of Middle East studies and expertise. How Mark Colvin discovered his father was a spy.

Could Joan of Arc be a good model for anyone wanting to become a genuine agent of change or transformation? The results of a three year research project with professional dancers to understand where creativity resides - in the body or the brain?

Queen Victoria has always been written about as retiring, modest and easily influenced by the men around her. Julia Baird's biography of the long-reigning monarch reveals a woman in command of her empire and herself.