What does 400 ppm look like? — Carbon Visuals

400 parts per million. Why is the figure in the news? Can we help people make 400 ppm meaningful for themselves by showing what it looks like?

Earth's Atmosphere Passes Significant Carbon Milestone - Dan's Wild Wild Science Journal - AGU Blogosphere

NASA Climate Change - CLIMATE UPDATE: Global average atmospheric carbon dioxide concentration remained at about 400 ppm in January. Learn more: Carbon dioxide (CO2) is an important heat-trapping (greenhouse) gas, which

Human activities have dramatically increased atmospheric CO2 levels, causing imbalances in the global carbon cycle – Climate Feedback

We just breached the 410 ppm threshold for carbon dioxide -- the highest it's been since the mid-Pliocene

How the World Passed a Carbon Threshold and Why It Matters - Yale E360

CO2 Levels Break Another Record, Exceeding 411 Parts Per Million - Yale E360

CO2-Levels-Approaching-400-PPM

Effect of including 400 ppm carbon dioxide in the cathode stream. a.

Carbon dioxide hits 400 ppm for the first time in human history

Visualizing Changes in CO₂ Emissions Since 1900

The world passes 400ppm carbon dioxide threshold. Permanently, Climate crisis

Graphic: Carbon dioxide hits new high – Climate Change: Vital Signs of the Planet

Carbon dioxide levels have been over 400 ppm for last 3 months, and haven't been this high in ~ 800,000 to 15 million years. : r/dataisbeautiful

Global Carbon Dioxide - 400 ppm, Thursday 9 May 2013 the da…

Planet Health Report: AIR