Issues
Reference Frame
Letters
Search and Discovery
Entangled light beams from four-wave mixing carry spatial information
Not only do the beams display correlations in their quantum fluctuations, but so do different parts of them when examined separately.
Very low-frequency radio waves drain Earth’s inner radiation belt of satellite-killing electrons
A high-altitude nuclear explosion would swell the radiation belt and imperil the global positioning system and other satellites. VLF transmissions could forestall the damage.
X-ray outburst reveals a supernova before it explodes
Long predicted but never before seen, the x-ray harbinger let observers record the supernova’s early light in unprecedented detail.
Issues and Events
Will desperate climates call for desperate geoengineering measures?
Earth scientists ponder the wisdom of large-scale efforts to counter global warming.
Path integrals, Les Houches, and other adventures of Cécile DeWitt-Morette
Entrée to Paris got Cécile DeWitt into physics. Working with great physicists kept her in the field.
Iranian and US scientists keep channels of communication open
Visiting physicists and engineers are welcomed in Tehran and carry conciliatory messages from Iranian leaders back to the US.
Articles
The changing face of Titan
On Saturn’s hazy moon Titan, torrential downpours of methane punctuate centuries of drought on a landscape of sand dunes and badlands.
A tangled tale of topological fluids
Whether a large polymer is linear, simply branched like a star, or multiply branched dramatically affects how it moves through a densely entangled polymer soup
Geoscience research for our energy future
Understanding the complex interactions between pressurized fluids and porous rock is a key prerequisite to the safe sequestration of carbon dioxide and radioactive waste.
Books
New Products
Obituaries
Robert Jastrow
Quick Study
Acoustic design of music rehearsal rooms
An architectural acoustician relies on the physics of sound propagation, material properties, and noise control to craft a desired soundscape.