A sun-swept corner of the Painted Desert draws more than 600,000 visitors each year. While most come to see one of the world's largest concentrations of brilliantly colored petrified wood, many ...

Stay informed and entertained with ABC Australia. Access live events, news, audio and on-demand video streaming from the nation's most trusted broadcaster. More from ABC We acknowledge Aboriginal ...

1 Department of Systems Neuroscience, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany 2 Department of Anaesthesiology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany ...