Tag Archives: Maya

Origin of yellow fever

Enrique Chaves-Carballo¬† Kansas City, Kansas, United States   Henry R. Carter (1852-1925), Public Health Service Assistant Surgeon General and yellow fever epidemiologist. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0) The origin of yellow fever has been a controversial subject since the disease appeared in the New World. William C. Gorgas, who was responsible […]

Control of blood

E. C. Spary United Kingdom Figure 1. Blood spurting from the neck of a decapitated human sacrifice in this bas-relief on the wall of this Mayan temple at Chichen Itza (Yucatan, Mexico) transforms into snakes, indicating its connection to power, life and death. Blood, that vivid liquid within our bodies, has an attraction for human […]