https://scitechdaily.com/scientists-solve-a-66-million-year-old-climate-mystery-that-changed-earth-forever/
So the dissolved solids were more concentrated during the cenozoic million years ago which interacted with CO2 releasing massive amounts to make most of Earth a tropic but when later the calcium levels went down so did CO2 and that set up the ice age cycles we have now so the gist of all that is getting a handle on dissolved calcium gives a handle on predictions of changes in CO2 and therefore climate change.
@moonbus saidSpeaking of oceans, this paper suggests there are 45 oceans worth of hydrogen in Earth's core, saying that amount of hydrogen could have been all Earth needed to make oceans, no need now to call up comets and asteroid collisions, which obviously happened but the paper says the H2 was here billions of years ago.
@sonhouse
Good article, thanks sonhouse.
One thing is certain: if the oceans die, we die.
https://phys.org/news/2026-02-earth-core-oceans-worth-hydrogen.html