Issues
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Readers’ Forum
Search and Discovery
Borexino experiment detects neutrinos from the Sun’s carbon-nitrogen-oxygen cycle
The cycle’s catalytic reactions account for just 1% of the Sun’s energy, but they are the dominant energy producers in heavier stars.
Stretchy molecules rupture far from the crack
Newly observed molecular consequences of fracturing in an elastic sheet reveal some surprises.
Photoelectrons shine a light on dark excitons
The population of the elusive quasiparticles is nearly twice that of their bright counterparts in a two-dimensional semiconductor.
Issues and Events
US government acts to reduce dependence on China for rare-earth magnets
Although the US has sufficient raw materials, the domestic supply chain to alloy and manufacture rare-earth permanent magnets is almost nonexistent.
Guiding inventions from lab to market
A career in technology transfer requires skills in multitasking, communicating, and negotiating; one reward is seeing scientific advances benefit society.
Articles
Magnetic fields for modulating the nervous system
Although targeted actuation of neurons via magnetic fields may benefit neuroscience research and medicine, some approaches have sparked controversy.
California dreamin’
Defense projects made the West Coast the promised land for US physicists after World War II—until the projects dried up.
Relativistic quantum chaos in graphene
Classical chaos gains some additional degrees of freedom in materials with excitations described by the Dirac equation.
Books
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Obituaries
Joan Feynman
Mario J. Molina
Quick Study
Whiskey webs: Fingerprints of evaporated bourbon
When a water-diluted droplet of American whiskey evaporates, it can leave behind a self-assembled web pattern not found in Scotch or brandy.