The herculean task of moving the reference for objective reality from a man-made object to an unchanging constant of the universe unifies nations all over the globe.  In the end, the kilogram, an object unlike any other and the last of its kind, will be resigned to history. The Last Artifact captures the significance of this moment, not just for an unsung band of scientists, but for the world, which will be better for it in ways we have yet to discover.

Learn about the Avogadro Sphere and how it could be used to redefine the kilogram.