 Image Number K5830-1 |
William Wergin (standing) and Eric Erbe use low-temperature scanning electron microscopy to observe snow crystals collected in Beltsville, Maryland.
Photo by Keith Weller
An official website of the United States government
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.