The human juggernaut is permanently eroding Earth's ancient biosphere by a combination of forces that can be summarized by the acronym HlPPO, the animal hippo.

The HlPPO juggernaut we have created, if unabated, is destined according to the best estimates of ongoing biodiversity research to reduce half of Earth's still surviving animal and plant species to extinction or critical endangerment by the end of the century.