Research highlights include the invention of atomic absorption spectroscopy, development of the first polymer banknote, invention of the insect repellant in Aerogard, technology and the introduction of a series of biological controls into Australia, such as the introduction of Myxomatosis and Rabbit calicivirus for the control of rabbit populations. In October 2005, Nature magazine announced that CSIRO scientists had developed near-perfect rubber from resilin, the elastic protein which gives fleas their jumping ability and helps insects fly.