And while global warming has been trumpeted as an epic climate change crisis with human-produced CO2, a trace atmospheric ‘greenhouse gas’ branded as a primary culprit and endangering ‘pollutant’, don’t be too sure about the veracity of those pitches. Throughout earlier periods of Earth’s history those levels have been many times higher than today, with temperature changes preceding — not following — atmospheric CO2 changes. It doesn’t require a degree in a climate science, or rocket science either for that matter, to understand these basic facts.