Explore the connection between ocean ridges and oxygen in this 25-minute conference talk from the 2014 AGU Fall Meeting. Delve into the consequences of internal planetary evolution for surface habitability, focusing on the role of ocean ridges in oxygen production. Examine questions surrounding oxygen, the concept of a planetary fuel cell, and mass balance. Investigate the Great Oxygenation Event and engage with simple thought experiments. Review evidence supporting the presented ideas, gaining insights into the complex interplay between geological processes and atmospheric composition.