In a recent leader in the “Spectator” magazine, Matt declared that “Finally, thankfully, the global warming craze is dying out. To paraphrase Monty Python, the climate parrot may still be nailed to its perch at the recent COP summit in Belem, Brazil – or at Harvard and on CNN – but elsewhere it’s dead. By failing to secure new pledges for a cut in fossil fuels, COP achieved less than nothing”. He notes that Bill Gates’s recent apologia, in which he conceded that global warming “will not lead to humanity’s demise” after he closed the policy and advocacy office of his climate philanthropy group, as the latest nail in the climate scare coffin. But the climatastrophe has been a terrible mistake. It has diverted attention from real environmental problems, cost a fortune, impoverished consumers, perpetuated indoor pollution and poverty, frightened young people into infertility, wasted years of our time, undermined democracy and corrupted science. But how can we now undo that damage, despite continuing attempts to perpetuate it by IPCC and NGOs? That burning question will be the key topic of this seminal lecture, which will doubtless lead to a highly animated Q&A and discussion.