Scientists are worried because they can’t fully explain the big jump, but they think it might mean that carbon absorption by forests, fields and wetlands is slowing down—a major problem for the world.

It’s cool having a graph on your wrist of the ambient concentration ... You’ll also be more than ready to advise other partygoers if the carbon dioxide level is reaching dangerous levels.

The chart originated when Charles David Keeling ... according to NOAA. Atmospheric CO2 levels first surpassed 400 parts per ...

The lack of context minimized the government’s own findings that atmospheric levels of carbon dioxide — the most abundant planet-warming gas in the air — jumped up by a record amount in 2024.

Instead, it changed colors to show the carbon dioxide (CO2) level in the air, in an unconventional effort to contain the spread of COVID-19. During her performance, a pop star on the stage ...