Ice House vs. Greenhouse
The discussion highlights the distinction between ice house and greenhouse states, emphasizing that Earth is currently in an ice age, a colder phase characterized by year-round ice at both poles. The transition from a predominantly warm greenhouse period to cooler ice house periods is linked to significant events in Earth's history, such as the rise of oxygenic photosynthesis, which played a crucial role in reducing atmospheric carbon dioxide and altering global temperatures.In this clip
From this podcast

The Science of Everything Podcast
Episode 140: A History of Earth's Climate
Related Questions
The climate was very cold in earlier time periods and became warmer in later time periods. Can you provide more details on this climate change?
The climate was very cold in earlier time periods and became warmer in later time periods.
Is it accurate to say that the Earth is not on a normal heating and cooling cycle and that we just happen to be in the middle of a heating cycle?