Issues

Time-resolved x-ray diffraction experiments help to explain why lithium iron phosphate cathodes work so well.

Seismic analysis of an aftershock off Russia’s Kamchatka Peninsula offers evidence that deep earthquakes are more complicated than geoscientists realized.

Peculiar properties of a miniature optical cavity give the switch its sense of direction.

New policies intended to promote excellence could have the opposite effect and possibly undermine decades of investment in R&D.

SmartAmerica Challenge catalyzes two dozen projects that add further functionality to the Internet of Things.

Industry and the NRC maintain that US reactor safety has greatly improved in the three years since Japan’s nuclear catastrophe.

Forecasters would love to predict violent weather with more accuracy and longer lead times. Researchers are helping them by unraveling the science behind the complex sequence of events that lead to tornadoes.

Video and audio from hundreds of smartphones and dashboard cameras combined with seismic, acoustic, and satellite measurements provide the first precise documentation of a 10 000-ton asteroid explosion.

The global network of sensors commissioned to monitor compliance with the Comprehensive Nuclear-Test-Ban Treaty has proven capable of that task and more.

The familiar denizens of the particle zoo are made of two or three quarks, but particle theory allows for states comprising any number of those fundamental particles. Finally, after decades of searching, tetraquarks seem to have been spotted.