According to a new study in the journal Science Advances, 60 percent of the world's large wild herbivores are threatened by extinction from hunters, predators and resource depression by livestock.
The study, "Collapse of the World’s Largest Herbivores," looks at the threats faced by the 74 largest terrestrial herbivore species on Earth.
Here & Now's Jeremy Hobson speaks with the lead author of the study, Bill Ripple, about findings.
Correction: An earlier version of this web story misstated where Bill Ripple works. He is a professor at Oregon State University, not the University of Oregon. We regret the error.
This segment aired on May 4, 2015.