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By Ron Cowen of Nature magazine Newly released observations of the top quark -- the heaviest of all known fundamental particles -- could topple the standard model of particle physics. [More]

By Eric Hand of Nature magazine Can the time-warping ways of Einstein's theory of general relativity be measured by the quantum 'ticking' of an atom? In 2010, researchers at the University of California, Berkeley, claimed in Nature that they had used an inexpensive table-top apparatus to show how gravity had altered a fundamental oscillation of two atoms.