PSI

John O'Sullivan

John O'Sullivan

 Credentials

  • Credentials heavily contested. No reliable source available.

 Background

John O'Sullivan is a UK-based climate denialist blogger, writer and the sole active director of Principia Scientific International - a membership group promoting fringe views on climate change science and role of carbon dioxide in the atmosphere. O'Sullivan, a former school teacher, claims the greenhouse effect caused by carbon dioxide is unproven and that human-caused climate change is a “fraud”. 

Read more: John O'Sullivan

Principia Scientific International

Principia Scientific International

 Background

Principia Scientific International (PSI) is an organisation based in the United Kingdom which promotes fringe views and material to claim that carbon dioxide is not a greenhouse gas.

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