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

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

Financial Times on X: The concentration of carbon dioxide in the atmosphere has reached its highest level ever recorded. 'It is a reminder of this time that is running out', scientists say

Ocean acidification: A wake-up call in our waters

CO2 has been higher in the past

The UN's dire warning about climate change is a wake-up call for everyone to take action - Upworthy

Last time carbon dioxide levels were this high: 15 million years ago, scientists report

RealClimate: Sea level in the 5th IPCC report

Carbon dioxide has hit a level not seen in four million years. This is what it means for the world

Climate Milestone: Earth's CO2 Level Passes 400 ppm

Carbon Dioxide Through Time EARTH 103: Earth in the Future

Just how 'Sapiens' in the world of high CO2 concentrations?

Despite COVID pandemic, level of carbon dioxide in the atmosphere hits historic levels

Coastal Sea Levels in U.S. to Rise a Foot by 2050, Study Confirms - The New York Times

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

Do high levels of CO2 in the past contradict the warming effect of CO2?

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