A graph depicts the upward trajectory of carbon dioxide in the atmosphere as measured at the Mauna Loa Atmospheric Baseline Observatory by NOAA and the Scripps Institution of Oceanography.

The graph, which shows the inexorable rise in the levels of atmospheric carbon dioxide, is one of the most recognizable indicators of humans’ impact on Earth’s climate.

Carbon dioxide levels are typically represented on a graph known as the Keeling Curve, named for Keeling’s father, Charles David Keeling, who began taking daily measurements of atmospheric ...

Levels of carbon dioxide in the atmosphere are commonly represented on a graph known as the Keeling Curve, named for Keeling’s father, Charles David Keeling, who began taking daily measurements ...

A large increase in atmospheric methane between 2020 and 2022 raised concerns that tropical wetland emissions had surged in ...

According to NOAA data, the global average of atmospheric carbon dioxide hit a new record high in 2021 of 414 parts per million. The highest level shown in the chart is under 300 parts per million.

They’ve been measuring carbon dioxide levels continuously since 1958 at that location, but ice cores and other data show that it’s not just the highest carbon dioxide has been in 61 years of data.

In 2013, atmospheric carbon dioxide surpassed 400 parts per million for the first time since scientists started tracking levels in the mid-twentieth century. NOAA reported a high of 414 parts per ...

For nearly a million years, carbon dioxide levels in the atmosphere have maintained an average of about 280 ppm, not going above 300 ppm or below 160 ppm. Global warming (and cooling) trends have ...

For decades, scientists have tried to figure out ways to reverse climate change by pulling carbon dioxide out of the atmosphere and storing it underground. They’ve tried using trees, giant ...

Carbon dioxide levels are typically represented on a graph known as the Keeling Curve, named for Keeling’s father, Charles David Keeling, who began taking daily measurements of atmospheric ...