DNA from 457 koalas suggests the species nearly went extinct 100,000 years ago, before humans reached Australia
Koalas nearly went extinct before humans arrived, DNA study reveals A major genetic study has found that koalas almost became extinct about 100,000 years ago because of major climate changes, long before the first humans reached Australia.By studying the DNA of hundreds of koalas, an international team of researchers found that every koala alive today…