Carbon dioxide levels hitting historic high is the final wake-up

At 415 ppm, carbon dioxide level is at highest ever in human history

Analysis: Growth of Chinese fossil CO2 emissions drives new global

Earth's carbon dioxide levels exceed highest point in human history

CO2 has been higher in the past

Carbon dioxide levels soar to record high despite COVID-19 pandemic

Carbon Dioxide Reaches Highest Recorded Levels In Human History

Carbon Dioxide Levels Hit All-Time High—And Are Growing Rapidly

23rd century CO2 levels could surpass the age of the dinosaurs

Carbon dioxide emission

CO2 Concentrations Hit Highest Levels in 3 Million Years - Yale E360