Issues
Physics Update
Letters
‘Nibbling the Bullet’: Tenure, Mandated Retirement, Options
Search and Discovery
At Long Last, a Bose–Einstein Condensate is Formed in Hydrogen
Because hydrogen atoms interact quite weakly, they are at the same time desirable and difficult candidates for the low temperature collapse into a common quantum ground state predicted in the 1920s.
Giant Air Shower Array Shows Cosmic‐Ray Spectrum Violating Greisen Cutoff
The highest‐energy cosmic rays appear to be thumbing their noses at what was thought to be an inviolable upper limit.
Long‐Pulse 60‐Tesla Magnet Starts Routine Operation at Los Alamos
With the long‐pulse 60 tesla magnet now running at Los Alamos, you can study electrical and magnetic properties of many materials.
Articles
The Global Electric Circuit
An electric current totaling one kiloamp worldwide flows from thunderstorms in the troposphere into the ionosphere and magnetosphere, eventually returning to the ground through the fair‐weather atmosphere and closing via lightning.
Advanced Techniques in Physical Forensic Science
Ultrasensitive mass spectrometry is now being applied in forensic investigations.
New Magnetic Superconductors: A Toy Box for Solid‐State Physicists
Rare earth nickel borocarbide compounds are rekindling interest in the decades‐old question of how superconductivity and magnetism coexist, and some remarkable answers are emerging.