The American far right has been gathering strength for decades, according to writer David Neiwert. But the profile and influence of the alt right has grown immensely since the election of Donald Trump. How concerned should be we be?

The ageing brain, like the ageing body, needs exercise to stay in shape. Creating art can keep your brain ticking over and moderate the impact of mental illness.

We might be a 24/7 society but our body clocks are still tuned to the planetary cycle of night and day. This circadian rhythm is vital for restful sleep and good health.

Music is a powerful memory aid. That's why you can recite the lyrics of a song from years ago but struggle to remember where you put your keys. Even dementia patients respond to music when other memories are lost.

Jill Stark was wracked by anxiety and depression. She talks to Paul Barclay about hitting rock bottom, the myth of happiness, and what her struggles have taught her.

Do hormones maketh the man, and the woman?  Testosterone makes men tall and deeper voiced, but is it also the cause of male aggression?

Einstein revolutionized the way we understand space, time, matter and gravity. We now share a universe with black holes, neutron stars and gravity waves and can eavesdrop on galaxies far, far away.

Jokes, comedy, political satire – they showcase our values and taboos. We do have to take humour seriously. What is the nature of humour and why is it so hard to be funny today?

With strong economic ties but a clash of political ideology and systems, Australia seeks to build on the strengths of our relationship with China while acknowledging the differences.

An expert panel explains why performing art should be used as a tool of dissent and why we need to fight for our freedoms also in a democracy – or we will lose them.