Neil Winton;

When I became Reuters global Science and Technology Correspondent in the mid-1990s, the global warming story was top of my agenda. Already by then the BBC was scaring us saying we would all die unless humankind mended its selfish ways. Carbon dioxide (CO2) was the culprit and had to be tamed, then eliminated. I had no reason to think this wasn’t established fact. I was wrong.

My Reuters credentials meant that I had easy access to the world’s finest climate scientists. To my amazement, none of these would say categorically that the link between CO2 and global warming, now known as climate change, was a proven scientific fact. Some said human production of CO2 was a probable cause, others that it might make some contribution; some said CO2 had no role at all. Everybody agreed that the climate had warmed over the last 10,000 years as the ice age retreated, but most weren’t really sure why. The sun’s radiation, which changes over time, was a favoured culprit.

My reporting reflected the wide range of views, with Reuters typical “on the one hand this, on the other, that” style. But even then, the mainstream media seem to have run out of the energy required, and often lazily went along with the BBC’s faulty, opinionated thesis. It was too much trouble to make the point that the BBC’s conclusion was challenged by many impressive scientists.

Fast forward 20 years and firm proof CO2 was warming the climate still hasn’t been established, but politics has taken over.