Add Yahoo as a preferred source to see more of our stories on Google. Le kilogramme est mort. Vive le kilogramme! The U.S. National Institute of Standards and Technology called this Friday a “turning ...

The International Committee for Weights and Measures is about to reach a decision that could affect the teaching and understanding of basic science for the next hundred years. It has passed a ...

VERSAILLES, France — In a historic vote, nations on Friday unanimously approved a ground-breaking overhaul to the international system of measurements that underpins global trade and other vital human ...

Redefinition of the kilogram will not make the kilogram more precise, but it will make it more stable. A physical object can lose or gain atoms over time, or be destroyed, but constants remain the ...

Scientists are preparing to officially update the definition of a kilogram after using an old metal prototype as the global reference for almost 130 years. Since 1889, the exact mass of one kilogram ...

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...