Greenhouse gas emissions - Wikipedia
Copernicus: 2022 was a year of climate extremes, with record high temperatures and rising concentrations of greenhouse gases
Carbon Dioxide Through Time EARTH 103: Earth in the Future
What happened 3 million years ago to cause CO2 levels to be higher than they are today? - Quora
Changing atmospheric CO2 concentration was the primary driver of early Cenozoic climate
CO2 Higher Today Than Last 2.1 Million Years - The Earth Institute - Columbia University
Climate, Free Full-Text
Oxygen and Carbon Dioxide History Affirms Divine Creation - Reasons to Believe
How the World Passed a Carbon Threshold and Why It Matters - Yale E360