Oceanographer Helen Czerski dives into the physical workings of the ocean engine, and explores how it has shaped civilisation.

Why don't all nutrients sink to the ocean floor?

Watch the full talk at https://iai.tv/video/how-oceans-shape...

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.

#oceanography #physics #earthscience #oceancurrents

Dr Helen Czerski is a a physicist, oceanographer, presenter and author, currently working as an Associate Professor at University College London in the Department of Mechanical Engineering.

00:00 Introduction
00:28 Greenland shark
02:23 The structure of the ocean
04:01 What is the Humboldt Current?
04:45 Economic history of Peruvian anchoveta fisheries
06:48 The Humboldt Current explained
08:30 History of the guano trade

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