Scientists say they have identified parts of the brain that generate feelings of a phantom-like presence and create an experiment that makes people feel like a ghost is nearby.

A species of bat has been observed for the first time interfering with the sound signals of competitors to "steal" food.

If the Rosetta probe can get into just the right position around Comet 67P on Wednesday, it will eject the Philae lander on to a seven-hour descent to the surface of the 4km-wide icy object.