[gleeaikin]

Yes, still alive and kicking. Ice cores is not the only way to measure this. Sediment cores and stelactites (sp?) are others. There seems to have been a destinct change in the cycles around 1.5 million years ago.

https://www.google.com/search?q=images%2C+temperature+records+for+million+years+and+longer&rlz=1CAJCUZ_enUS847&sxsrf=ALeKk03EwVs23r73pX_78eNPVuUEFKi03A%3A1619063228119&ei=vPGAYK3VBsql5NoPsOiSiAQ&oq=images%2C+temperature+records+for+million+years+and+longer&gs_lcp=Cgdnd3Mtd2l6EAw6BwgAEEcQsANQjvwFWKXEBmDw-wZoAnACeACAAb8CiAGSF5IBCDAuMTAuNC4xmAEAoAEBqgEHZ3dzLXdpesgBCMABAQ&sclient=gws-wiz&ved=0ahUKEwito9LE-JDwAhXKElkFHTC0BEEQ4dUDCA4

[Openurmind]

That is a great graph, thank you. It definitely shows we have been cooling down for a looooong time now. :)