Gum trees in the Kalgoorlie region of Western Australia are absorbing gold particles from deep in the soil, and depositing it in their leaves and branches.
Like a hydraulic pump, the Eucalypus trees with its roots that extend tens of thousands of metres into the earth draw up water that contains gold.
The trees treat the gold particles like a poison, and move the gold to its leaves and branches where it can be released by shedding onto the ground.
Read more at CSIRO