 Blood: Physiology and Circulation (The Human Body)
Humans have been fascinated by the intricacies of
blood as far back as early Egyptian civilization.
Tombs in Egypt depicted bloodletting—a procedure
through which blood is intentionally removed from a
vein—as a treatment for sick patients. Some ancient
Greeks drank the blood of a fallen warrior, believing that... |  | Cryptography: Cracking Codes (Intelligence and Counterintelligence)
While cracking a code might seem like something few of us would encounter in our daily lives, it is actually far more prevalent than we may realize. Anyone who has had personal information taken because of a hacked email account can understand the need for cryptography and the importance of encryptionessentially the need to code information... | | |
