Multimedia Features

Keeling Curve
artist concept to visualize Keeling Curve

The Keeling Curve is a scientific icon that is, to some scientists, as famous as the double helix and E=mc2. The jagged upward slope shows the seasonal fluctuations and rising carbon dioxide levels in Earth's atmosphere.

Animation credit: NASA/JPL

Low resolution (31Mb - Quicktime)
High Definition (44Mb - Quicktime)