Videos show a new program that lets robotic arms in a factory gracefully avoid each other.
The best of the rest from the Physics arXiv this week:
A new approach to nanoparticle detection can measure the number of particles, their mass, and even their size.
NASA reports on the performance of its historic test flight rocket, including why the parachutes failed.
Campaign takes shape to gather complaints and get Congress to pass privacy laws.
Astronomers have always assumed that Uranus must have been knocked onto its side by a collision. Now a new idea suggests that the planet's remarkable tilt could have another explanation.
For hundreds of scientists, embryonic stem cell research takes a step into the present.
A new study says it's the best explanation for materials found in a meteorite, but not everyone agrees.
By some estimates, ocean mixing caused by swimming creatures is comparable to the mixing by the wind and tides. Now a new model of ocean swimming is set to test this idea.
Another step in a Sisyphean effort to extract useful energy from the ocean.