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The Keeling curve kept rising - and the atmosphere answered for it

A lone scientist in Hawaii watched a single line of CO2 climb for decades-why was the air changing?

The Keeling curve kept rising - and the atmosphere answered for it

In this episode we follow the measurements that recorded a relentless rise in CO2 from 313 ppm in 1958 to 415 ppm six decades later, and we trace the scientific evidence used to ask whether that rise could be natural. What do the numbers, ice cores, and atmospheric fingerprints reveal about the sources and scale of change?

Person: Charles David Keeling

Date: 1958 measurement - 313 ppm

Date: 2019 measurement - 415 ppm

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