You know kilo, centi, and milli, but how about ronto? Four new metric prefixes got the official stamp of approval last week at the 27th General Conference on Weights and Measures held at Versailles, the extravagant palace outside of Paris. The scientists who gathered there agreed on the need for...

The final countdown has begun for leap seconds. A global group of scientists and government officials voted (almost unanimously) Friday to axe the small time adjustment method, in a change scheduled to take place by 2035. Read...