Everybody loves a fish story. Somehow, such stories often grow with the telling, stretching the truth and straining all credulity. Listeners respond with laughter and knowing nods as they express their doubts about the fisherman’s tale.

Scientists have long known that pigments in tattoo ink make their way into lymph nodes, as the immune system works to remove foreign material (ink) from the underside of the skin.

The UK’s “spy chief” and head of MI5 recently observed that the threat for terrorism in Britain “is multi-dimensional, evolving rapidly and operating at a scale and pace we’ve not seen before… It’s at the highest tempo I have seen in my 34-year career. Today there is more terrorist activity, coming at us more quickly, and it can be harder to detect” (The Guardian, October 17, 2017).