Complex sentence: Human activity has included some mining and nuclear weapons testing while today the desert is inhabited by different groups of Indigenous Australians including the Kogara, the Mirning and the Pitjantjatjara.
Split into simpler sentences: Human activity has included some mining and nuclear weapons testing. Today the desert is inhabited by different groups of Indigenous Australians including the Kogara, the Mirning and the Pitjantjatjara.