The proportion of the planet’s land that is free from human impact is projected to drop from a quarter to a tenth by 2050, as habitat removal, hunting, pollution, disease and climate change continue to spread, the organization added.

The group has called for an international treaty, modeled on the Paris climate agreement, to be drafted to protect wildlife and reverse human impacts on nature.

It warned that current efforts to protect the natural world are not keeping up with the speed of manmade destruction.

The crisis is “unprecedented in its speed, in its scale and because it is single-handed,” said Marco Lambertini, the WWF’s director general. “It’s mindblowing. … We’re talking about 40 years. It’s not even a blink of an eye compared to the history of life on Earth.”

“Now that we have the power to control and even damage nature, we continue to (use) it as if we were the hunters and gatherers of 20,000 years ago, with the technology of the 21st century,” he added. “We’re still taking nature for granted, and it has to stop.”