Daily Archives: October 11, 2015

CO2 Increase

CO2 in our atmosphere is still increasing. In fact this year the annual average amount has passed 400 ppmv (part per million by volume) for the first time in a long time — at least a million years. The reason: we’re burning fossil fuels like oil, coal, natural gas. When we do, it turns that long-buried carbon into carbon dioxide, which ends up in the atmosphere. It’s as simple as that.

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