Transport properties Research update Ampere could be defined one electron at a time Device could close the quantum metrological triangle Read article: Ampere could be defined one electron at a time
Metrology Feature Firm claims a ‘dry’ cryogenics first Sample and 17 T magnet cooled without liquid helium Read article: Firm claims a ‘dry’ cryogenics first
Metrology Opinion and reviews Making physics profitable Jonathan Flint talks about his plans to double the size of the UK's Oxford Instruments Read article: Making physics profitable
Particles and interactions Research update Two relativity tests are better than one Lorentz invariance disentangled in Europe and Australia Read article: Two relativity tests are better than one
Metrology Research update Model puts new spin on hurricane prediction High-resolution data explain curious "eyewall replacement" Read article: Model puts new spin on hurricane prediction
Metrology Research update Astrophysicist and space pioneer dies James Van Allen has died at the age of 91 Read article: Astrophysicist and space pioneer dies
Metrology Research update It’s raining again Scientists think they know why rain can start so suddenly from cumulus clouds Read article: It’s raining again
Stars and solar physics Research update Sunspots hit new highs Analysis of carbon-14 in tree rings sheds news light on the Sun Read article: Sunspots hit new highs
Metrology Research update Silicon joins race to redefine the kilogram A new measurement of the Avogadro constant could allow the unit of mass to be defined in terms of atomic and fundamental constants