No, we have not wiped out 60% of all animals, FFS:
Since Monday, news networks and social media have been abuzz with the claim that, as The Guardian among others tweeted, “humanity has wiped out 60 percent of animals since 1970”—a stark and staggering figure based on the latest iteration of the WWF’s Living Planet report.
But that isn’t really what the report showed.
Ultimately, they found that between 1970 and 2014, the size of vertebrate populations has declined by 60 percent on average. That is absolutely not the same as saying that humans have culled 60 percent of animals—a distinction that the report’s technical supplement explicitly states. “It is not a census of all wildlife but reports how wildlife populations have changed in size,” the authors write.
CityLab's article includes math, that turns out not to be difficult in the least.
The report is still alarming, of course. But not in the way some science reporters seem to believe.