Smithsonian Institution Archives

Bentley found "each snowflake is as different from its fellows as human beings are from each other."

The Man Who Revealed the Hidden Structure of Falling Snowflakes

Beginning in the 1880s, amateur photographer Wilson A. Bentley considered the endlessly varied crystals "miracles of beauty"

The Carnegie Quarry fossil excavation at Utah's Dinosaur National Monument has yielded more than 11 different species, including dinosaurs, such as Allosaurus, Diplodocus and Stegosaurus, as well as turtles, crocodiles and lizards.

You Can Thank Scientists for the National Park System

Early conservation research and scientific expeditions laid the groundwork and helped to convince the public national parks were a good idea

Front and back of the letter written by Charles Darwin to Ferdinand Vandeveer Hayden on May 2, 1875

A Letter Written by Charles Darwin, Twice Stolen, Returns to the Smithsonian

After being snatched by an intern in the mid 1970s, the missive written by the scientist returns to Washington

One series of photographs in particular is exciting for the unique perspective. It was taken from an angle no one had seen before. “In his camera lens you can see the back of Clarence Darrow, and you can see the face of William Jennings Bryan,” historian Marcel Chotkowski LaFollette says.

The Scopes Trial Redefined Science Journalism and Shaped It to What It Is Today

Ninety years ago a Tennessee man stood trial for teaching evolution, a Smithsonian archives collection offers a glimpse into the rich backstory

For the first time in more than a decade, bison will roam at the National Zoo.

The Historic Return of the American Bison

A National Zoo exhibition featuring the animal, long tied to Smithsonian history, opens Saturday

A page out of the diary of William H. Dall, one of the many documents being transcribed by the Smithsonian Transcription Center's small army of volunteers. At the ripe age of 21, Dall set off in 1865 to explore the Arctic on a Western Union Telegraph Expedition.

The Smithsonian Wants You! (To Help Transcribe Its Collections)

A massive digitization and transcription project calls for volunteers at the Smithsonian

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