There are some amazing ways species evolve to survive. From large ears to sneezing salt, learners read about these interesting adaptations in an interactive lesson. Great to supplement an in-class lesson, it also works well as a remote...

Background image of normal disc-shaped red blood cells from the University of Utah. Inset shows sickled red blood cells, curved and rigid, from the Virginia Medical College.

Learn about the structure and function of human blood as well as the composition of this complex substance in the human body through a series of video clips.

WebMD Health offers a detailed overview of sickle cell disease, a severe blood disorder. Content includes a focus on this disease's causes, symptoms, and treatments, as well as information on how the disease progresses and when to call a...

This article gives information about sickle cell anemia, a disease caused by mutations of the gene that forms red blood cells. Provided are answers to the following questions: "What Do Doctors Do?" and "What Can Teens Do to Stay Well?"

The Sickle Cell Anemia Association invites you to "visit often to get the latest news and available information" on sickle cell anemia. Visit the FAQ section for quick facts and answers to basic questions.

Learn about human blood cells, blood disorders, and ABO blood types.

Learn about the disease diabetes and how it affects blood sugar in affected people, in this Mayo Clinic animated video. [2:10]

Get a look at sickle cell disease, thalassemia, and disorders of iron metabolism with this informative site! Site includes overview of research done, management of the diseases, and new developments in the field. Also included is useful...

This website offers a clear definition of the science of Genetics, highlighting DNA and genes. There is a neat, easy-to-understand animated tour of the basics and an opportunity to go inside an animated cell. Student can build a DNA...

This video segment describes the basics of the circulatory system: how the heart pumps the blood that carries oxygen and nutrients throughout the body. [3:14]

Find out how the body rids itself of wastes and fights off infections with the help of the lymph nodes and white blood cells.

Resource about the bone marrow donor program provides informaiton at marrow transplants for patients with aplastic anemia, leukemia, and other illnesses. You can learn about this program, how to help and find real life stories.

What do you know about the circulatory system? This site features several links to help you increase your knowledge of this fascinating human body system.