Bandages used by battlefield medics and paramedics often have chemicals to help treat wounds and stop blood loss. But often, blood itself takes those chemicals away from where they’re needed. Researchers now have developed bandages to fix that problem, potentially saving countless lives. The bandages have a combination of powdered marble, acid and enzymes that fizz on contact with blood, using the resulting bubbles to transport microparticles toward deeper vessels that need clotting. The bandages heal wounds faster while reducing the chances of complications that might prove deadly, and would be welcomed warmly to the areas of the world suffering from conflict.