Issues

The excess positrons above those produced by cosmic-ray collisions may result from dark-matter annihilation or from extreme astrophysical environments.

The ability to image single neurons deep beneath the organ’s surface facilitates three-dimensional mapping.

As its budget declines, Lawrence Livermore’s $3.5 billion laser fusion facility is refocusing on experiments in support of nuclear weapons science.

The administration’s spending blueprint for 2014 finds room for a new space mission and increases for the physical sciences, but R&D budget decreases are looming.

US scientists and policymakers say breakthroughs in transportation-battery research are needed to curb greenhouse gas emissions and foreign oil imports.

Much of what we know, and even more of what we don’t know, about Earth’s climate and its propensity to change is rooted in the interplay between water, air circulation, and temperature.

High-energy accelerator beams colliding head-on have now completed the discovery of all the fundamental particles required by particle theory’s standard model. The search is on for new ones.

Together, Sigma Pi Sigma and the Society of Physics Students establish a vital link between the physicists of tomorrow and those of today and yesterday.

A new kind of electric motor is the cornerstone of a chain that can bend itself into multiple shapes.