ABC Radio National

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  Bossa nova and beyond

  Anna Salleh was not much more than nine years old when she saw Black Orpheus, the cult classic film set in Rio de Janeiro. The soundtrack left an indelible mark—eventually inspiring her to travel to Brazil to learn more about the sounds and rhythms of bossa nova.

  Earshot

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  The strange life of the immortal jellyfish

  The Earth's only immortal species is a tiny transparent jellyfish that travels the world in the ballast tanks of cargo ships. It's the only known animal capable of reverting completely to a sexually immature stage after having reached maturity, as Dr Karl Kruszelnicki explains.

  Great Moments In Science

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  The value of virtual worlds

  Pokemon Go has thrown the monsters among the monuments. But what of the philosophical problems raised by virtual and augmented reality? Philosopher David Chalmers takes down some common objections.

  The Philosopher's Zone

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  Survey finds more households in debt stress

  Markets expect the Reserve Bank to cut the official cash rate again, but despite the prospect of ever cheaper credit, a new survey says more households are reporting debt stress. Sheryle Bagwell explains.

  RN Breakfast

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  James Miller: My story of childhood sexual abuse

  In the '70s James Miller was a bright teenager who loved surfing, rugby league and girls. That all changed when he was abused at his Catholic secondary college in Newcastle. Now, after years of trauma, he wants to share his story and help others recover from abuse.

  Life Matters

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  Constantinople, the holy city that dazzled faraway lands

  In 2014, Richard Fidler and his teenage son travelled to Istanbul to immerse themselves in the forgotten history of this city, once the capital of the Byzantine Empire.

  Saturday Extra

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  Meet the nudibranch

  Nudibranchs, a group of soft-bodied and immensely colourful molluscs, are often mistaken for sea slugs. But these gastropods couldn't be more different—or more interesting.

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