Previous progress towards instituting carbon emission caps in the US have been derailed by fears (voiced most prominently by the current administration) that such regulations would stifle the American economy. There has been progress, however, as exemplified by the bipartisan support for the Lieberman– Warner Climate Stewardship Act, which, while not reaching a full vote by the Senate this year...

We describe the mathematics which arises from a real-world activity, that of ringing the changes on bells. We present Rankin's solution of one of the famous old problems in the subject, and some open questions.

The water spider Argyroneta aquatica (Clerck) is the only spider that spends its whole life under water. Water spiders keep an air bubble around their body for breathing and build under-water air bells, which they use for shelter and raising offspring, digesting and consuming prey, moulting, depositing eggs and sperm, and copulating. It is unclear whether these bells are an important oxygen res...

OBJECTIVES To investigate the characteristics associated with survival in esthesioneuroblastoma and to determine whether the modified Kadish staging system can predict outcome. DESIGN Retrospective population-based cohort study. SUBJECTS All patients in the Surveillance, Epidemiology, and End Results tumor registry diagnosed as having esthesioneuroblastoma (1973-2002). MAIN OUTCOME MEASUR...