Image Number D3856-1 |
At the ARS Grazinglands Research Laboratory in El Reno, Oklahoma, cows visit a system that measures their methane emissions. Scientists can monitor the system online.
Photo by Rick Todd.
Please visit our Image Gallery.
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.