How can nonconducting sand particles transfer the huge amounts of charge needed to generate spectacular lightning displays? A new model finally explains this phenomenon.
Six people will lock themselves in a Russian-built Mars simulator for 520 days.
Rather than emitting light, a time-reversed laser absorbs it. Perfectly.
The best of the rest from the Physics arXiv this week
The new role that quantum information plays in gravity sets the scene for a dramatic unification of ideas in physics.
Could mimicking the process in humans rejuvenate damaged hearts?
A report suggests that the U.S. is losing its edge in the clean energy market.
Mathematicians discover how to tile a plane in a nonrepeating pattern using a single shape.
The government says a space agency could boost the country's economy and science.
A combined device aims to help patients recover from a stroke or injury.