ALTHOUGH there are many doubters of man-made climate change, I am not yet one of them. But I remain unconvinced that carbon dioxide is the sole bete noire. Two decades ago, I pored over the spectral properties of the infra-red radiation of this gas, which is essential to plant life, and found that it was almost completely overshadowed by the radiative properties of water vapour, which is vital to all forms of life on earth.
Repeatedly in science we are reminded that happenings in nature can rarely be ascribed to a single phenomenon. For example, sea levels on our coasts are dependent on winds and astronomical forces as well as atmospheric pressure and, on a different time scale, the temperature profile of the ocean. Now, with complete abandon, a vociferous body of claimants is insisting that CO2 alone is the root of climatic evil.
I fear that many supporters of this view have become carried away by the euphoria of mass or dominant group psyche. Scientists are no more immune from being swayed by the pressure of collective enthusiasm than any other member of the human race. I do not believe for one moment that undisciplined burning of fossil fuels is harmless, but the most awful consequence of the burning of carboniferous fuels is not the release of CO2 but the large-scale injection ofminute particulate pollutants into the atmosphere.