Talk about massive change. After meeting the needs of science, industry and commerce for more than 130 years, the kilogram has just been fundamentally reinvented. At a meeting Friday in Versailles, ...

A nanogram (ng) is a unit of mass in the metric system, equal to one billionth (10-9) of a gram (g). The gram is a base unit of mass in the International System of Units (SI), making the nanogram a ...

The United States is one of just three countries that "prefers" imperial measurements over the international metric standard. The motivation why has less to do with official policy than you might ...

Wondering why the United States measures things in inches and pounds? The answer will definitely surprise you All countries use the metric system to varying degrees. Most of the world has adopted the ...