Are CO2 molecules timestamped so that the Earth can avoid absorbing them after year one? Maybe 50% of emitted CO2 disappears from the atmosphere after one year, but it allegedly takes 999 years for the next 31% from that year to leave the atmosphere

Twitter / jeffburnside: One third of the CO2 your car ...

One third of the CO2 your car emits today will still be in the air in 100 years. 19% remains for 1000 years: Texas Tech Climate Ctr. #SEJ12

Flashback: The Case of the Missing Carbon -- National Geographic

Each year humanity dumps roughly 8.8 billion tons (8 metric tons) of carbon into the atmosphere, 6.5 billion tons (5.9 metric tons) from fossil fuels and 1.5 billion (1.4 metric) from deforestation. But less than half that total, 3.2 billion tons (2.9 metric tons), remains in the atmosphere to warm the planet. Where is the missing carbon? "It's a really major mystery, if you think about it," says Wofsy, an atmospheric scientist at Harvard University.