When Homo sapiens arrived in Australia, they were, for the first time, truly alone, surrounded by wildly different flora and fauna. How did they survive and populate a continent? There is a close cultural and genetic link between the First Australians and modern-day Aborigines. The ancient and modern story intersect here as nowhere else in the world. The secret to this continuity is diversity. Intuitively, they found the right balance between being separate and connected.

• Kerry Shale