Washington, DC - When the kilogram, the world’s basic unit of mass, gets a new definition in 2018, it will be based not on a physical artifact but a constant of nature. However, researchers will still need to “realize” the new definition, or translate it into a physical object, to make it possible to distribute the new standard to the laboratories and industries that need it. Of the two methods that are major contenders for this realization process – watt balances and silicon spheres – both require delicate measurements in vacuum.

Washington, DC - What could be better than a world-leading atomic clock? Two clocks in one.

Washington, DC - Using background checks to screen tenants? Or maybe your company provides those background checks to landlords? Make sure you’re complying with the Fair Credit Reporting Act (FCRA). The FTC’s new guidance for landlords and for tenant background screening companies can help.

Virginia Beach, Virginia - The Commander of Explosive Ordnance Disposal Group (EODGRU) Two, based in Virginia Beach, requests privacy for the family of Senior Chief Petty Officer Scott C. Dayton, who died on Thanksgiving after sustaining injuries while deployed in Syria.

West Lafayette, Indiana - Shoppers sitting down at their computer to take advantage of online sales are helping the environment, said a Purdue University professor.

Arabian Gulf - Royal Navy Commodore Andrew Burns, commander of Amphibious Task Group embarked on the U.K.'s premier naval warship, HMS Ocean (L 12), took command of U.S. Naval Forces Central Command's Task Force (CTF) 50 in the Arabian Gulf, today.