Experts warn the the sixth great extinction is coming with species dying 10 times faster than biologists first expected.
Stuart Pimm, of Duke University, is the lead researcher of the landmark project and believes humans must act now to slow down the process.
He said: “We are on the verge of the sixth extinction.
“Whether we avoid it or not will depend on our actions.”
The study, which was published in the journal Science, looks at the death rate of species becoming extinct from Earth.
It found that now 1000 out of one million species become extinct each year, which was higher than the 100 species they originally estimated.