Smithsonian American Art Museum, Gift of George D. Pratt. The Smithsonian Institution came of age in the era of Manif ...

Over the past 20 years, the Nigerian-born Nkanga, 50, has explored the idea of rock, and by extension the land that sheds it, ...

For the first time, geoscientists detected the top of Yellowstone’s magma reservoir. It is active and dynamic, but not in ...

Interior Department officials are considering scaling back the boundaries of national monuments in the West to encourage ...