Natural History, the study of natural objects and events. The term was once applied to the branch of knowledge that includes the biological and physical sciences. In the first century A.D., Pliny the Elder, a Roman writer, summarized most of the existing knowledge of nature in his Historia Naturalis (Natural History). Until the late 19th century many scientific works, especially in the fields of botany and zoology, were called natural histories.
Whether they're big or small, extinctions change the world. And while extinctions themselves are all about change, the study of extinction is all about uncertainty. Anything that lives can become extinct, but how do scientists know when it happens?
Where did humans come from? How did they migrate throughout the globe? Thanks to a longstanding anthropological concept and an unexpected discovery, conventional wisdom on human migration may be irrevocably shattered.