Some researchers expressed doubt about the WWF's large scale predictions, but they were inclined to agree that if we don't do something soon, it might be too late to save our wildlife.
"There's all sorts of things you have to take into account just to accurately estimate how many animals are in one population, let alone average across thousands of species," Asia Murphy, a researcher at Pennsylvania State University and a member of the Huck Institutes of the Life Sciences, told The Dodo. "But, obviously, there is a problem with species declines. One can see that just by stepping outside and looking around."
"We as a species are currently overshooting the limits of Earth's ability to support us and the other species we're sharing the world with, and we need to work, as individuals and as nations, to come up with solutions to the biodiversity crisis," Murphy said. "The sooner we get to working on that, the better."