Gail grew up thinking her grandfather, Dr William Macbeth, had poisoned two of his young sons

A friendship formed with a female teacher, when Mary-Rose was 15, triggered a series of devastating events

Lisa-Ann Gershwin discovered a new species of deadly Irukandji jellyfish. 

Lisa-Ann Gershwin was in her late 20s when she visited a small aquarium in Los Angeles. There she found white moon jellyfish in a tank, hanging 'like clouds in the sky'.

They were the most beautiful, mesmerising creatures Lisa had ever seen, and that day set her life's work in motion.

She's now one of the world's foremost jellyfish biologists who has discovered more than 200 species, including one she named Bazinga.

She says jellyfish blooms pose an increasing risk to the world's oceans, and there's only one way to stop them.

To binge even more great episodes of the ‘Conversations podcast’ with Richard Fidler and Sarah Kanowski go the ABC listen app (Australia) or wherever you get your podcasts. There you’ll find hundreds of the best thought-provoking interviews with authors, writers, artists, politicians, singers, psychologists, musicians, and celebrities.

James explains the traditions, language and quirks of shepherding in England's Lake District (R)

Uncovering the Buddhist temples and relics of Bagan

The personal struggles behind Mia's business success

John Safran's journey into the world of Australia's white nationalists, ISIS supporters and anarchists

Historian Paul Ham and the bloody futility of Passchendaele (R)

Liz Gilbert's creative life (R)

Is following in the slipstream of more powerful nations still working for Australia?