Scientists are finally beginning to understand how common genetic differences among individuals underlie differences in the structures that make up their brains.

Physicists propose that five dimensions of space-time can harbor a rotating, donut-shaped "black ring"--the first example of a nonspherical black hole. If we live in a world with extra, hidden dimensions--as many theorists speculate--these rings might even be created in Geneva, at the world's largest particle accelerator, now under construction.

University of Vienna researchers hope to send an experiment to the International Space Station (ISS) by the middle of the next decade that would pave the way for transcontinental transmission of secret messages encoded using quantum entanglement.