On what would be his 148th birthday Google has honoured Nobel Laureate Karl Landsteiner the discoverer of blood groups -- key to successful blood transfusion -- with a Doodle. Landsteiner may not be a household name but his work that made blood transfusion safer has helped millions of people lead longer healthier lives. The first fundamental discovery in the history of serology didn't come until 1901 when Karl Landsteiner's identification of blood groups spurred a flurry of additional research and discovery and eventually led to his receiving the 1930 Nobel Prize in Physiology or Medicine according to the Vienna-born biologist's