Human bodies produce 2 billion metric tons of CO2 a year just by staying alive

Humans collectively produce more than 2 billion tonnes of carbon dioxide annually just by turning food into energy, a 74% increase over three decades largely driven by population growth. Unlike fossil fuel emissions, however, the CO2 we exhale is part of the natural carbon cycle, and scientists say measuring it…  | Written by | Latest Science News — ScienceDaily | Read full story at Read More