Canadian climate change journalist of over 30 years Alanna Mitchell is not a scientist or a trained actor.  But her one-woman show has been one of the most talked-about performances at the Edinburgh Fringe Festival this year.  This adaptation of her sixth book about climate change, the award-winning Sea Sick: The Global Ocean in Crisis offers what she’s learned about the health of the world’s oceans traveling five continents in two and a half years, joining thirteen expeditions with thirteen climate scientists along the way.  Alanna explains to Kathryn Ryan why in the book, and the play, she describes the oceans as “a warm, breathless and sour toxic cocktail”.