The effects of human travel on the environment
from a remarkable collection of photographs:
from a remarkable collection of photographs:
- The Conquistadors of Forests
- Ancient Roman Postal Service
- The Oregon Trail: A Migratory Route of Manifest Destiny
- European Travel: Causes and Consequences for Human Subsistence
- From Here to There: Transportation's Enabling of Plagues
- The Sustainability of Tourism
- Trading Numbers: Trade and the Development of Numerical Systems
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