The requirement for an object to be surrounded by empty space when imaged by coherent X-ray diffraction was once thought to be a fundamental limitation. A variant of coherent diffractive imaging proves this not to be the case, and substantially widens its potential use.
Democrat Barack Obama's appeal to  centrist voters has further opened the door to Republican claims his message of change only applies to the positions he has taken in the past.
AP - Iran indicated Saturday that it has no plans to meet a key Western demand that it stop enriching uranium, a day after Tehran sent the European Union a response to an international offer of incentives for halting enrichment.
AP - The call girl involved in a scandal that brought down New York's former governor has dropped a lawsuit claiming "Girls Gone Wild" founder Joe Francis exploited her image and name on the Internet.
