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World Meteorology Day: India adopts new standard for kilogram, changes textbooks
World Metrology Day: Why the updated kilogram is both a big deal and not so much
The definition of the kilogram has been changed, by scientists, 130 years later
Dusty old kilogram may be upgraded this week to a more accurate unit of measurement
NIST measures Planck's Constant with unprecedented accuracy to help redefine the kilogram
A prototype artifact in France has been the reference for how much a kilogram should weigh, and has been in use since 1889.
