"When it comes to nanotechnology, Australians have shown strong support for regulation and safety testing. One common way of deciding whether and how nanomaterials should be regulated is to conduct a risk assessment. This involves calculating the risk a substance or activity poses based on the associated hazards or dangers and the level of exposure to people or the environment. However, our recent review found some serious shortcomings of the risk assessment process for determining the safety of nanomaterials..."