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.
Stefanie Kagone, above, and Aaron Friesz, with the graphic for the USGS Earth Resources Observation and Science (EROS) Center podcast "Eyes on Earth."
Public Domain.
