National Physical Laboratory

For the first time in 30 years, new terms have been officially added to the International System of Units. The four new prefixes – ronna, quetta, ronto and quecto – describe very large and very small numbers that until now didn’t have their own names

The official definition of a kilogram may be redefined this week. After years of debate and discussion, scientists from around the world are meeting in Paris on Friday to vote on whether the kilogram, the mole, the ampere and the kelvin should be changed to more stable and reliable definitions.

A new approach to producing "smart fabrics" involves bonding electrically-conductive silver to ordinary materials.