Ancient wasp nests have enabled scientists to, for the first time, accurately pinpoint the ages of rock paintings dating back thousands of years in a remote part of Australia. And the picture that emerges is one of the continent's earliest human inhabitants getting to grips with climate change. Speaking with Chris Smith, Damien Finch is based at the University of Melbourne but works in what's arguably one of the most beautiful places on Earth... Like this podcast? Please help us by supporting the Naked Scientists