Helen Czerski is a British physicist, oceanographer, and presenter for the Fully Charged Show. She is known for her expertise in fluid dynamics, particularly her research on the physical properties of bubbles and their impact on various natural phenomena.

Czerski has a strong passion for making complex scientific concepts accessible to the general public and her work has contributed to promoting scientific literacy and fostering curiosity about the natural world. In this episode, she drops in to talk about her new book 'The Blue Machine' which has already been featured as Radio 4's book of the week.