Insomnia and work disability Børge Sivertsen (University of Bergen, Bergen, Norway) presented data from a large, population-based health study that was linked to the official registry of the Norwegian National Insurance Administration [1]. The aim of the study was to estimate the direct effect of Diagnostic and Statistical Manual, fourth edition (DSM-IV)-defined insomnia on permanent work disab...

Our understanding of the nature of interstellar grains has evolved considerably over the past half century with the present author and Fred Hoyle being intimately involved at several key stages of progress. The currently fashionable graphite-silicate-organic grain model has all its essential aspects unequivocally traceable to original peer-reviewed publications by the author and/or Fred Hoyle. ...