TED-ED: The motion of the ocean - Sasha Wright

The video explains the concept of thermohaline circulation, a global ocean current driven by temperature and salinity differences. It uses the analogy of Roombas to illustrate concentration gradients, which are key to understanding how substances move from high to low concentrations. The video also highlights the role of salt ions and the impact of polar regions on global circulation. Finally, it connects these concepts to everyday phenomena like electricity and respiration, emphasizing the simplicity behind complex systems.

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