Al Gore presented graphs in the movie "An Inconvenient Truth" showing carbon dioxide (CO₂) and temperature change from Antarctic Vostok ice core records as evidence that CO₂ causes climate change.

But he got cause and effect reversed! The record actually shows that the CO₂ increase lagged the warming by about 800 years. Temperature increases cause the oceans to expel CO₂, increasing the CO₂ content of the atmosphere.

The ice core data proves that CO₂ is not a primary climate driver.