Per Million

Protest tool centering the most important number of our time

Oliver, Savičić 2022


Both protest tool and measurement reference, Per Million centers what may be the most important number of our time: the amount, in parts-per-million, of carbon dioxide in our planet’s atmosphere.

The number is taken live from The Keeling Curve, a graph of this accumulation based on continuous measurements taken at the Mauna Loa Observatory, in Hawaii. Running from 1958 to the present day, it is named after the late scientist Charles David Keeling who started the monitoring program.

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