Geological Survey (U.S.)
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of extraterrestrial planets and moons based on data from U.S. space probes.
Natural Gemstones
Uncover the mysteries of Earth's sparkling treasures, from their formation in geological environments to navigating the market, to become a savvy treasure hunter.
By Geological Survey (U.S.)
Ferdinand Vandiveer Hayden and the Founding of the Yellowstone National Park
A dedicated geologist's exploration of a breathtaking wilderness captivates a nation, leading to the unprecedented protection of an American treasure.
By Geological Survey (U.S.)