"Gold leaf" trees discovered in the Australian outback
Scientists from Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) have discovered that eucalyptus trees in the Australian outback are drawing up gold particles from deep underground through their root system and depositing the precious metal in their leaves and branches.
Re-blogged from the excellent Gizmag which has more infos
Much more (scientific and very long): Nature Communications
So much for the axiom: “money doesn’t grow on trees”.