Saved by 'sand' poured into the wounds 16 March 2006 From New Scientist Print Edition Jessica Marshall Emergency situations require fast-acting treatments DETECTIVE Danny Johnson was on patrol outside Tampa, Florida, when a report came through of a possible shooting in a junkyard three blocks away. Arriving on the scene, he found an elderly man sitting on a tractor, with a large hole in his leg that was bleeding profusely. Realising it would be some time before the ambulance arrived, Johnson opened a packet of sand-like material and poured it into the wound. Within seconds the bleeding had practically stopped,...