Earth is home to a huge story that is rarely told -- that of our ocean. What it does, why it works, and how it's influenced human civilisation. Join leading oceanographer and broadcaster, Helen Czerski, as she argues that the ocean is not merely a feature of our planet, but an extraordinary engine on which we all depend -- a phenomenal blue machine.
"Czerski’s enthusiasm is infectious because she brings our humdrum everyday world to life" - Jim Al-Khalili