Underwater volcano eruption 7,300 years ago is the largest in recorded history (livescience.com)

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From https://www.reuters.com/article/idUSL1N2XV1HA/

> According to the U.S. Geological Survey, published scientific estimates of the global CO2 emissions for all on land and submarine volcanos “lie in a range from 0.13 gigaton to 0.44 gigaton per year.”

> This is a fraction of the CO2 produced by human activity. In 2021, the global CO2 emissions from energy combustion and industrial processes alone reached a record high of 36.3 billion tonnes (or gigatons, GT), data from the International Energy Agency (IEA) showed

For many scientists, "recorded history" means the span of time for which evidence of events occurring exists.

Events dated via ice core analyses, the fossil record, dendrochronological study, and many other methods all make up "recorded history".