Skip to main content
U.S. flag

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.

Search News by

Displaying 1 - 13 of 13

Knowing When Poultry Goes Foul

Mom's trusty nose may be good, but researchers at the National Institute of Standards and Technology (NIST) have gone her one better by designing an instrument

Wherefore a Leap Second?

The spin of the Earth is slowing down. Not by much; only about 0.002 seconds a day (it varies), relative to our modern definition of the second. The varying