Peter Gleick@petergleick@fediscience.org
This is one of my favorite climate graphs (I like the graph, though not what it tells us).
It shows ~800,000 years of natural variability of global atmospheric carbon dioxide (from the Vostok ice core data), plus the last few decades, when CO2 levels have skyrocketed from human activity.
It shows definitively how humans are driving current climate changes, far outside natural variability.
