These trucks from the American Red Cross were packing up after their bi-annual visit to my high school on Tuesday. It’s one of the few days a year that I give props to kids who miss my class because they’re doing something truly more important. Unfortunately, I missed donating this time due to schedule and last time due to ineligibility. Sometimes my visits to Costa Rica disqualify me for a time, depending on where I stay. In any case, please donate often. The only source of life-giving blood is other humans.