The famous Cantino planisphere was made in 1502 by an anonymous Portuguese official at the request of Alberto Cantino, an Italian agent in Lisbon of Ercole d’Este, Duke of Ferrara. It is the earliest map showing the recent discoveries by the explorer Vasco da Gama, who, using a new portable version of astronomers’ astrolabe, charted Brazil, Newfoundland, Greenland, Africa, and India. Besides... Read More »
The map, issued by the Center for Disease Control (CDC), shows the percentages of substantially overweight, or obese, low-income children by county and in territories and tribal organizations where Native Americans live. The problem extends to both urban and rural populations.
Overall, 1 in 7 low-income, preschool-aged children is obese. Experts have been alarmed by the rapid rise in... Read More »
This map, created by Dr. John C. Peters and featured in the April 25, 1885 edition of Harper's Weekly, depicts the spread of cholera throughout the world and the major cholera pandemics that occurred in the nineteenth century. Cholera is a diarrheal disease caused by the bacterium Vibrio cholerae. The disease causes excessive water and electrolyte secretion, dehydration, and... Read More »
This map outlines the political territories that took the place of the Soviet Union after 1991. The fifteen republics of the USSR became fifteen independent states: Russia, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, Georgia, Azerbaijan, Armenia, Ukraine, Moldavia, Belarus, Estonia, Latvia, and Lithuania. The boundary lines etched onto the Soviet map remained intact, but now... Read More »