Battlefield

When a soldier is wounded right at the junction between an extremity and the torso, it can be difficult to treat. A group of students from Johns Hopkins University are working on a solution, in the form of a hardening polyurethane foam that's injected into the wound.

Uncontrolled hemorrhage (bleeding out) is responsible for 80 percent of combat deaths – people die because we can't plug a simple hole. Now RevMedX, a small Oregon startup, has developed an alternative approach to treat such potentially survivable injuries.

Harvard scientists are developing a device known as the spleen-on-a-chip, for treating sepsis by filtering pathogens from the blood.

The Defense Advanced Research Projects Agency (DARPA) is developing a foam that can be injected into the body cavities of battlefield wounded to protect them from internal abdominal bleeding.