Deep inside, Earth twinkles like a star (“planet” means “wandering star” in Greek). Twinkling implies fluctuations in heat output, like distant stars. We are on a cosmic voyage & cannot expect Earth to deliver the same heat all the time. The Sun does not shine, it twinkles with sunspots on an 11-year cycle. 1,800 miles below, at the Gutenberg Discontinuity (GD), temperatures of Earth’s gravity engine are as hot as the Sun, about 10,800F.
On day one of Genesis, it was Earth that lit up the dark vacuum of space when God said,
“Let there be light!”
That same day, when magma & a crust were piled on top of the GD, the only light in the universe went dark. Then, on day four, “Let there be lights in the expanse of the heavens to separate day from night. And let them be for signs and for seasons, and for days and years.”
Clearly, humans played no part in Earth’s historic temp swings. The only likely suspect causing climate change is: The twinkling gravity engine of intrepid wandering star Earth