Peter Otway (The Weekend Sun, July 5) states: "Having such a poor grasp of science he like so many sceptics of climate science…"

Climate alarmism suffers from a manifest lack of scientific scrutiny. Peter like so many alarmists have no science to back up his insults. The UN IPCC agree that 95 per cent of CO2 is naturally made and 5 per cent man made, of which CO2 is 0.04 per cent of our atmosphere of which NZ makes 0.0012 per cent. CO2 is portrayed as a pollutant, which it is not, without CO2 plants could not complete carbon fixation, the process that plants use to convert CO2 into sugars, carbohydrates and Oxygen. CO2 is only present in the Troposphere and incapable of altering our climate.

The earth is essentially a water planet. A major aspect of climate involves the complicated interaction between two very turbulent fluids: the atmosphere, which holds large amounts of water (think rain and snow), and the oceans (Hydrosphere), which cover fully 70 per cent of Earth's surface. Water vapour (clouds) makes 95 per cent of all greenhouse gases.

To make the climate models work the IPCC 'scientists” removed atmospheric water vapour out of the greenhouse gas equation. I've a good grasp of real science.

Rob Colmore, Oropi