@GidMK Been having some fun investigating this (it's like the creationist-clinate denier "100 scientists" letters. No source listed, and to you sign it via a Google doc! https://vitamind4all.org/letter.html pic.twitter.com/iizWzvm2Yo
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Yes, 'fraid so.
The signatories are the usual list of retired people, physicists, fringe academics, plus a couple of very senior people like the director of Western Health and Melbourne Uni academic, who I think have been added without their knowledge.
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