Most teenagers deliberately hide what they are really talking about on Facebook - a practice that could make it harder to pitch ads at them.
Another chance to catch the most interesting, and important, articles from the previous week on MIT Technology Review.
The best of the rest from the Physics arXiv preprint server
Spacecraft could determine their position anywhere in the solar system to within five kilometres using signals from x-ray pulsars, say astronomers.
Tesla Motors’ loan repayment is a bright spot for the DOE loan program.
An Australian team unveils the fundamental building block of a scalable quantum computer that could be embedded in today’s silicon chips.
In Washington, CEO Tim Cook defended Apple’s R&D cost-sharing arrangements.
Pinpoint predictions are a long way off, but taking daily odds into account might help make the public more alert.
Can cultural factors be more important than censorship in shaping Chinese surfing habits? Two researchers argue that a new study of the way global websites cluster together supports this idea.
Jolla Mobile, formed by Nokia refugees, launches a phone with interchangable back panels and the Sailfish OS.