When 17-year-old Brian Gacek headed for school on March 13, he had no intention of turning into an activist. Centennial High in Circle Pines, an outer-ring suburb a half hour's drive north of the Twin Cities, was holding its annual blood drive, and Gacek, a junior with dreams of becoming a medical researcher, had signed up to donate. At 8:30 a.m., he and several buddies he'd talked into joining him straggled into the school auditorium, rolled up their sleeves, and braced themselves for the needle. But first a Red Cross staffer guided the students one-by-one to step onto a scale, have their iron levels checked, and run through a quick... More >>>