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 ...

There is a new standard in town, and it's sort of a big deal. This new standard is the definition of the kilogram, the unit of mass in the SI system—the International System of Units). It replaces the ...

Scientists voted on Friday to redefine it based on electric currents. A replica of the International Prototype Kilogram is pictured is seen at the 26th meeting of the General Conference on Weights and ...

The kilogram is getting an update. No, your bathroom scales won’t suddenly become kinder and a kilo of fruit will still weigh a kilo. But the way scientists define the exact mass of a kilogram is ...

Despite having weighed myself in kilograms for quite some time, I've never really contemplated exactly who or what decides what a kilogram is (other than, obviously, being 1,000 grams). But it turns ...

Most runners will have weighed themselves in kilograms for quite some time, and never really contemplated exactly who or what decides what a kilogram is (other than, obviously, being 1,000 grams). But ...

The official definition of a kilogram has been changing for well over a century, but this week it may be redefined for the final time. After years of debate and discussion, scientists from around the ...

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 ...

Recent studies have shown that the kilogram may need to go on a diet because it has gained tens of micrograms of mass from surface contamination. Recent studies have shown that the kilogram may need ...