How Much LSD Does It Take to Kill an Elephant?

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“Most of you read the title and thought I was kidding, right? I mean, who in their right mind would give a huge dose of a psychotropic substance to an elephant, just to see what happened? Well, the year was 1962, and someone did just that. And, as icing on the cake, they got a Science paper out of it.” (Retrospectacle)