Researchers (IMAGE) University of Sydney Caption Dr Georgia Ward-Fear, with brothers Herbert (left) and Wesley Alberts about to release 'Barney' . Credit Melissa Bruton Usage Restrictions For this story only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.