"Mum, my head's really itching!" These are no doubt familiar words to you ... because who hasn't had lice at school? Fortunately the fun will soon be over for these parasites. Julio Rozas, Professor of Genetics at the University of Barcelona, and his team have been involved in the international research responsible for sequencing the human louse genome. With this information deciphered it will now be possible to manufacture insecticides that are much more effective in the near future.