The Story of Carbon Dioxide IV: Carbon Cycle, CO2 Levels, and Climate Science

This installment of Wilcox Newspapers' series on carbon dioxide walks through the basic science of the carbon cycle: how plants turn sunlight and CO2 into glucose, how oxygen depends on carbon being buried, and why CO2 levels that look small still matter for the climate. It connects the geology of ice cores and deep time to the present 0.042 percent CO2 concentration, the highest in over 3 million years. The essay also raises the public policy angle. The author argues that informed voters need to understand greenhouse gas regulation because controlling emissions across the economy would require too much top-down control otherwise. The piece is more of a personal science review than a news report, but it is a useful primer for readers looking to understand the mechanisms behind climate change and carbon markets.