Did Our Ancestors Kill All the Island Megafauna?

Humans haven't always been great to nature. But at least our ancestors may not have killed off island megafauna in the distant past, so that's something. New research, published in the Proceedings of the Natural Academy of Sciences, suggests that there's not enough data to say that hominids in the Pleistocene—2.6 million to 11,700 years ago—were responsible for most of the extinctions on the islands they traveled to.