400ppm in Context
Jun 26, 2016
Analysis of ancient air bubbles recovered from deep within Antarctic ice indicates that current level of atmospheric carbon dioxide is the highest in at least 800,000 years.
Apr 20, 2017
This Earth Day, we step back to see what earth science has taught us about the planet, and for more than a century we have known that carbon dioxide is warming our world.
Jan 18, 2018
2017 was the third-warmest year on record globally, and the warmest without an El Niño — only 2015 and 2016 were warmer.
Oct 7, 2015
Global average temperatures are generally higher in El Niño years vs. La Niña years.