In 40 years, human actions like deforestation have taken a major toll on wildlife, a new report finds.Humans have wiped out about 60 percent of the world’s wildlife populations in the last four decades, a new report has found.Over-exploitation of species, deforestation and agricultural use have destroyed key animal habitats around the planet from 1970 to 2014. And now, the growing threat from human-caused climate change is increasing pressure on animals, according to the World Wildlife Fund’s 2018 Living Planet report.“Earth is losing biodiversity at a rate seen only during mass extinctions,” the report states.