Earth can regulate its own temperature over millennia, new study finds

A new study confirms that the planet harbors a 'stabilizing feedback' mechanism that acts over hundreds of thousands of years to keep global temperatures within a steady, habitable range.

I’ve also always wondered… if all the glaciers melt, truly all, wouldn’t that amount of water lower the salinity of the oceans and thereby cool them thus triggering a small ice age?

What about the Cryogenian period 720-635 MYA? Major glaciations, probably covering the entire globe.