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In the need of a new kilogram standard many scientists and engineers in the world are trying to create perfectly rounded spheres. As you may know the platinum kilogram standard is already 120 years old and it’s mass is unexplainable changing.

As you can read at the New Scientist post, several perfect spheres have been created across the globe for this project. You may think that according to the point at witch the technology has come, building a sphere may be not so complicated but I can  assure you that this may be one of the most promising challenges of the humanity

Watch the following video and read more on New Scientist