They actually weren’t and that’s also probably why we aren’t heading towards an ice age. Due to solar cycles the earth should’ve started cooling about 7,000 years ago but it didn’t and instead we entered the warmer holocene, perhaps due to mass deforestation and early agriculture releasing tons of CO2 and methane:
New study finds that Neolithic people were net zero on emissions
They had very few radiological incidents, and not a single nuclear meltdown in over 400, 000 years!
They also had zero microplastics or PFAS which was unprecedented at the time
They actually weren’t and that’s also probably why we aren’t heading towards an ice age. Due to solar cycles the earth should’ve started cooling about 7,000 years ago but it didn’t and instead we entered the warmer holocene, perhaps due to mass deforestation and early agriculture releasing tons of CO2 and methane:
https://stephenschneider.stanford.edu/Publications/PDF_Papers/Ruddiman2003.pdf
So we should already be near ice age if it weren’t for them? Dammit, i really like cold…!