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atmospheric CO2
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- 1CO2 levels up nearly 40% in one lifetime, post notes●When I was born CO2 concentration was 311 ppm. Now it is ~430 ppm, around a 38% increase. And that's just CO2. # Climate
A widely shared observation points out that atmospheric carbon dioxide has risen from roughly 311 parts per million to about 430 ppm within one person's lifetime, an increase of around 38%. The comparison, framed through a personal lifespan, underscores how quickly greenhouse gas concentrations have climbed, and commenters are using the figure to highlight the scale of human-driven climate change.