Chris & Tilly, back with fresh pantaloons! No Higgs boson news this week. Instead? Australian boys to get Gardasil. Also: magnetic fish noses, and watching salmon evolve. Very ichthyological, this episode.

IaSF 19-07-12: Lazy, Climate & Dolphin Maths

A weekly snippet of science to expand your brain, brought to you by Chris Stewart and Tilly Boleyn, from Tilly's Thursday Overdrive show on radio 2SER 107.7FM in Sydney, Australia.