Physicist Paul Davies on the mysteries of our universe, including the puzzle of the 'super-void' inside the constellation of Eridanus

The mystery of the hole in the universe

Spend an hour in someone else's life. Conversations draws you deeper into the life story of someone you may have heard about, but never met.

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Carly-Jay Metcalfe lives with cystic fibrosis, and has faced a double lung transplant, a rare cancer and other huge medical challenges. But through it all humour and hope have fuelled her survival (CW: this story discusses organ transplant and donation, drug use and self harm)

Carly-Jay on dying, living, and learning to breathe

Writer Lech Blaine on Peter Dutton, the former policeman who became the leader of the Liberal Party of Australia

A portrait of Peter Dutton

Scientist Tanya Latty on how a single-cell organism, slime mould, can solve complex problems in some remarkable ways (R)

The secret life of slime mould

What was on the "must-see" lists for tourists in 200 BCE? From the Hanging Gardens of Babylon to the Great Pyramids at Giza, historian Bettany Hughes is your tour guide through the seven wonders of the ancient world

Bettany Hughes takes you to the hottest sightseeing spots of the ancient world

Journalist Marina Kamenev on the changing story of our families in the 21st century (CW: discusses donor conception)

The mystery of the hole in the universe

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