OK, so, I've mangled this repeatedly. So I've been asked to explain. Essentially: the report does NOT show that the number of animals in the world have declined by 60% since 1970. That might have happened, and there really has been a mass extinction, but it's not what it says.https://twitter.com/TomChivers/status/1057209498945945600 …
to be fair to the journalists, the press release itself is very unclear, and would lead a reporter to that headline "From 1970 to 2014, there was a 60 per cent overall decline in vertebrate population sizes "