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Dear Colleagues, The D0 Collaboration has reported on a precision measurement of the mass of the top quark at Fermilab's Tevatron in the latest issue of Nature. "The new world average for Mt becomes 178.0 +/- 4.3 GeV/c2. As a result, the most likely Higgs mass increases from the experimentally excluded value of 96 to 117 GeV/c2, which is beyond current experimental sensitivity." Read all about it at: http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v429/n6992/full/nature02589_fs.html There is an accompanying "News and Views" article by Georg Weiglein at: http://www.nature.com/cgi-taf/DynaPage.taf?file=/nature/journal/v429/n6992/full/429613a_fs.html "The ultimate precision on Mt, however, will be achieved at a linear electron-positron collider. Such a machine is currently in the planning phase and could go into operation around the middle of the next decade. Data from the linear collider could improve the accuracy on the top-quark mass by about a factor of ten. Only then will the uncertainty due to the experimental error of the top-quark mass be well enough under control for the information gleaned from the LHC in the next decade - on the Higgs boson (or bosons), supersymmetric partners or other new physics - to be fully exploited." Norman Graf