Planet Earth is in the midst of a CO2 famine, according to William Happer, who is the Cyrus Fogg Bracket Professor of Physics at Princeton University. Prof Happer, who was speaking at a special lecture on climate change and Irish agriculture organised by the Irish Climate Science Forum (ICSF), argued that CO2 levels in the Earth’s atmosphere are at very low levels compared with millions of years ago.

The Princeton physics professor added that climate change modelling is fundamentally flawed, as it fails to take into account the full complexity of Earth’s atmospheric convections and the motion of warm air around the planet. He said the result of this was that carbon had been “demonised” as a pollutant.