evidence: Global averaged concentrations of carbon dioxide (CO2), the most important greenhouse gas, in 2022 were a full 50% above the pre-industrial era for the first time. They continued to grow in 2023. [...] Non-CO₂ Greenhouse Gases: Climate change is driven by multiple greenhouse gases, not just CO2. These gases have different atmospheric lifetimes, greater Global Warming Potential (GWP) than CO2 and uncertain future emissions. [...] Carbon dioxide is the single most important greenhouse gas in the atmosphere, accounting for approximately 64% of the warming effect on the climate, mainly because of fossil fuel combustion and cement production.