“…the carbon dioxide we breathe out originally came from the air, so when we exhale we’re simply putting it back from whence it came: we are part of a continuous carbon cycle, we are not adding new carbon. The same is true for anything that respires, including cows, each of which breathes out a whopping 10kg of carbon dioxide per day! So whether you are a cow, dog, human, ant or elephant, your breathing does not increase CO2 in the atmosphere.”
