NBC NewsThe definition of the kilogram just changed. Here's what that means.May 20, 2019By Jaclyn Jeffrey-WilenskyMore
CNNOut with the old kilogram, in with the new – scientists introduce more accurate measureMay 20, 2019By Jack Guy, Matthew Robinson & Lianne KolirinMore
ScienceAlertTomorrow The Definition of The Kilogram Will Change Forever. Here's What That Really MeansMay 19, 2019By Michelle StarrMore