Even though the wars in Iraq and Afghanistan haven’t definitively ended, the aftereffects are already being felt as thousands of soldiers return home with traumatic brain injuries (TBIs) caused by improvised explosive devices, or IEDs. The U.S. Department of Defense reports that TBIs, described as “the signature injury” of those wars, have afflicted some 320,000 veterans since 2000. Members of the U.S. Armed Forces who’ve sustained these wounds, which are often caused by simple, low-grade explosives, usually face either a long, hard road to recovery or a lifetime of infirmity. But University of Nebraska engineers are working to better understand