The study of reciprocity between mobile phone users reveals surprising insights about the flow of information in society.
Costs could drop by as much as 30 percent with other improvements.
Emphasis on preventing long-term brain injury has league executives changing policies.
The best of the rest from the Physics arXiv this week:
New calculations reveal that p-doped graphane should superconduct at 90K, making possible an entirely new generation of devices cooled by liquid nitrogen.
The famous Apollo 11 astronaut says NASA's sights should be on Mars.
Research suggests that high altitudes suppress appetite and increase metabolism.
A new technique for analyzing early English texts is gradually revealing the history of the apostrophe.
First, they teleported photons, then atoms and ions. Now one physicist has worked out how to do it with energy, a technique that has profound implications for the future of physics.