Making a global record of climate change data (such as CO₂ levels and average temperatures) requires highly repetitive labor carried out with monklike dedication. Learn about the Keeling curve, a graph of the rise of CO₂ accumulated in our atmosphere that has been tracked since 1958. The data helps us imagine and document our impact on the world’s climate.

Bridging Time is part of a four part video series made by Exploratorium Center for Art & Inquiry artist-in-residence Rosten Woo.