One man who was willing to share his blood has saved the lives of more than two million babies. According to the Goodnews Network, 78-year-old James Harrison has made weekly donations to the Australian Red Cross for over 60 years. The donations began when, in the 1960s, thousands of newborns in Australia were born with rhesus disease — a condition where the mother’s blood actually attacks the blood in the baby she’s carrying. It was discovered that Harrison’s blood carries a rare antibody that can prevent the disease. The Red Cross claims Harrison’s contributions have saved the lives of 2.4 million babies — including his own grandson’s.