I've often been struck by the way in which people who subscribe to one set of baseless beliefs are susceptible to others, in fields that are not obviously related. The internet is awash with sites that explain how the US government destroyed the twin towers – and how alien landings have been covered up by the authorities. Many of those who insist that Barack Obama is a Muslim also believe that sex education raises the incidence of unwanted pregnancies.

A rich collection of unfounded beliefs is a common characteristic of those who deny – despite the overwhelming scientific evidence – that man-made global warming is taking place. I've listed a few examples before, but I'll jog your memories.

Lord Monckton, whose lecture asserting that man-made climate change is nonsense has been watched by 4 million people, also maintains that he has invented a cure for Aids, multiple sclerosis, influenza and other incurable diseases.

Nils-Axel Mörner, whose claims that sea levels are falling are widely cited in the Telegraph and elsewhere, also insists that he possesses paranormal abilities to find water and metal using a dowsing rod, and that he has discovered "the Hong Kong of the [ancient] Greeks" in Sweden.

Peter Taylor, the Daily Express's favourite climate change denier, has claimed that a Masonic conspiracy has sent a "kook, a ninja freak, some throwback from past lives" to kill him, and insisted that plutonium may "possess healing powers, borne of Plutonic dimension, a preparation for rebirth, an awakener to higher consciousness".

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