Meet the metric system’s newest prefixes: ronna-, quetta-, ronto- and quecto-. Science News spoke with Richard Brown, head of metrology at the National Physical Laboratory in Teddington, England, ...

Here’s a good trivia question: What are the only 3 countries in the world that do not use the metric system? Everybody knows the good ol’ hard headed USA is in there, but the other two? How about ...

Back when I was a Catholic-school kid in northern Wisconsin, my school lessons briefly focused on the metric system. This was ...

The metric system's governing body has added some new terms to help describe massive amounts of data. The General Conference on Weights and Measures last week added the prefixes "ronna" and "quetta." ...