If Google thinks it's made an end-run around the problems with its Android app store, it's about to learn a tough lesson
In mice, stem cells derived from adult tissue can trigger immune rejection, even when matched to the tissue donor.
The discovery of a new arm in the Milky Way suggests that our galaxy is warped, say astronomers
A team at Rice says it can sterilize medical instruments using the sun. The technology could help bring safe surgical procedures to parts of the developing world that lack them.
A well-known British game designer has made a computer that he thinks will practically cost pocket change, and that fits on a USB stick-sized device.
The botched PR ploy is notable for understating how messed up online privacy actually is.
The situation at Fukushima may be worse than thought, and the disaster response plans of U.S. plants are found wanting.
The best of the rest from the Physics arXiv this week
The best place to watch ultra high-energy cosmic rays hitting the Earth is from space. But building an observatory that can do the trick will be hard, warn physicists
Not everyone thinks Google's attempt to reinvent the computer will work.