The marriage of gas balloon technology and the art of photography caused a sensation, and was later used as reconnaissance in the Civil War. Sonar technology finally revealed the mysteries of the ocean floor. And a futuristic map, created from satellite information processed by computer, is experienced as we go around the world in a 3D simulation. 1991 Part six of a major new series that weaves exploration, science, mathematics, religion and philosophy into a remarkable voyage of geographic literacy. Today maps are tools to save lives, alert us to dangers and guide us.
Risk analysis maps earthquake-prone areas to help in building plans.
Mapping the paths of hurricanes saves lives through preparation. Diseases are mapped, following the tactic of a nineteenth-century doctor who traced cholera deaths to one water pump. It was closed, and the epidemic abated. To illustrate the increased concern about our growing population, this video plots the population of earth from the year 1 C.E. to the year 2020 with historical references. Have slides for the India, China, and Japan sections.