On 7/15/2025 at 2:23 PM, MarkBR said:

There are complex natural cycles but humanity has been releasing Carbon which has been locked up in coal & methane since the Carboniferous Period, this has added to the natural variation the planet is subject to radaition from the Sun & its orbital mechanics.   So on top of warming due to coming out of the Pleistocene Ice Ages coupled to various cycles such as the Milankovitch Cycles, we also have climate forcing due to CO2 release caused by humans.   Hence climate on the planet has higher CO2 level than we have seen in millions of years.   Estimated at around 4-5 million years ago that planet Earth saw 400ppm CO2 in atmosphere.

CO2 is the food of plants. Cut that and you cut the vegetation

On 7/15/2025 at 5:21 PM, Lacessit said:

WE are.

 

Carbon dioxide levels have been stable at 280 ppm for 10,000 years. They started rising with the Industrial Revolution, and currently are 428 ppm.

 

Ice core data shows for the past 800,000 years, CO2 levels have been around 180 ppm during ice ages, rising to 300 ppm during warmer interglacial periods.

 

Yes, climate change is a natural phenomenon. So is CO2 trapping of infra-red radiation.

 

Every coal-burning power station or gasoline/diesel - fueled vehicle on the planet contributes CO2 to the atmosphere. Mankind did not have electricity or powered transport 300 years ago.

 

Cryptocurrencies and AI are comparatively recent, and they are gluttons for electricity.

You still have not explained how the Ice Age ended