The Earth needs greenhouse gases to enable our plants and trees to flourish

Sir, – Alistair Ballantyne (Letters, June 6) and Nick Cole believe that man-made carbon dioxide (CO2), poisonous to the climate as a greenhouse gas (GHG) must be reduced. CO2, formerly judged the main GHG, is now known to have much lesser impact.

Therefore, Messrs Ballantyne and Cole must address these points at least:

1) How could man-made CO2 be reduced when most comes from nations unwilling to curb its output? Anyway, curbing CO2 is now made impossible by the various adverse effects of the Russo-ukrainian war.

2) CO2 is biologically essential for plant growth, upon which we also depend. The present atmospheric CO2, about 0.04%, is nearminimal for that.

Crops, plants and trees all grow better in higher CO2 levels, as used in greenhouses.

3) There is no evidence at all that reducing CO2 influences climate.

4) The unvalidated

UN computer models, implicating CO2 as the climate ‘villain’ prove unreliable – “Garbage in (to computers), garbage out”!

5) By the laws of physics and molecular chemistry, CO2 cannot be blamed for climate overheating or adverse weather events.

Science now shows first that our climate is governed by atmospheric water vapour. That represents more than 95% of GHG and is under solar control.

The sun’s role controlling climate was previously not quantifiable.

It is, of course, beyond human influence.

Secondly, an imminent Grand Solar Minimum will cool the Earth, for decades at least.

Will the authorities who now spend vast resources on inevitably unnecessary, futile and ruinous attempts to reduce CO2 change their policies? Your guess is as good as mine!