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A clock accurate to within a tenth of a second over 14 billion years – the age of the universe – is the goal of research being reported this week by scientists from three different institutions. To be published in the journal Physical Review Letters, the research provides the blueprint for a nuclear clock that would get its extreme accuracy from the nucleus of a single thorium ion.

The convergence of art and science gets a new treatment in an exhibition opening next week at the American Museum of Natural History. " Picturing Science: Museum Scientists and Imaging Technologies " features more than 20 sets of large-format and visually engaging images that showcase the wide range of research being conducted at the museum, as well as how various optical tools are used in scientific research. A preview: Tibetan deity wood figure [More]