> Looking back, the greenhouse effect of CO2 was known in the 1800s, but even at the end of that century people thought it would take a millennium and be good.

> Looking back, the greenhouse effect of CO2 was known in the 1800s, but even at the end of that century people thought it would take a millennium and be good. There's an argument that agriculture and predominantly rice cultivation in China already did this. And that the Anthropocene started ~10,000 years ago and prevented CO2 in the atmosphere from falling to 150 ppm CO2 or so, and prevented the formation of continental shield glaciers by now. Since the end of the last ice age and Earth's axial tilt reaching its maximum 10,000 years ago, the Earth's axial tilt has been decreasing and that should have started a cooling trend towards the onset of a glacial period. Instead, we've had pretty consistent temperatures for the past 10,000 years.