Long hours. Extreme fatigue. You couldn't miss it in the faces of soldiers and refugees at Kabul Airport last month and you can't miss it now in the faces of caregivers in hospitals here at home. It just so happens that Washington State University Spokane is in the midst of a series of studies of how sleep deprivation affects people in high stress, high risk jobs.
If you have trouble getting a good night's sleep, it could be in your DNA. A team led by Washington State University-Spokane researchers has discovered a…