Radioscout Talphi
Your nose is attuned to things beyond the normal olfactory spectrum. The papillae at the end of your snout give you radiation sense, an imprecise sense with a range of 30 feet that alerts you to the presence and severity of radiation and creatures that emit radioactivity but is blocked by 3 feet of dirt or wood, 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or any force field.
Furthermore, you're experienced in dealing with radioactive materials. You become trained in Physical Science Lore. If you would automatically become trained in Physical Science Lore (from your background or class, for example), you instead become trained in another skill of your choice. Additionally, you gain a +2 circumstance bonus to Fortitude saves against radiation.