This man’s blood has saved the lives of two million babies

James Harrison is 78 and has donated blood nearly every week for the last 60 years.

Known as "The Man with the Golden Arm," the Australian discovered his blood was extremely valuable when he first went to donate at the age of 18.

Doctors noticed his blood contained a rare antibody which held the solution to a deadly condition called Rhesus disease. In Australia at the time, thousands of babies were dying in utero and at birth due to the condition which causes a pregnant woman's blood to actually start attacking her unborn baby's blood cells.