Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Red Gold: The Epic Story of Blood A companion piece to the Public Broadcasting Service (PBS) special, this site "delves into the facts and myths about human blood and its impact on everything from religion and medicine to commerce and popular culture throughout history." It offers information on the circulatory system, blood's physical properties, transfusions, donating blood, scientists, and bloodletting, as well as lesson plans for teachers and a discussion guide. http://www.pbs.org/wnet/redgold/ Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *