In the setting of traumatic cardiopulmonary arrest, protocols that direct emergency medical service (EMS) providers to withhold or terminate resuscitation, when clinically indicated, have the potential to decrease unnecessary use of warning lights and sirens and save valuable public health resources. Protocols to withhold resuscitation should be based on the determination that there are no obvi...

Such imaginative descriptions will have been influenced by mythical beliefs in sirens and mermaids. The Greek sirens were singing bird-women who lured sailors to their death, as described by Homer (I945 :c. Iooo B.C.) in the Odyssey and interpreted in terms of classical religious mythology by Robert Graves (I955). TIhe mermaid or water-nymph type of siren of nautical tradition originates in the...

On 14 September 2015, the twin detectors belonging to the Laser Interferometer Gravitational Wave Observatory (LIGO) made a triple discovery: the first direct detection of gravitational waves (GWs), first observation of formation of a black hole and first observation of a binary black hole. Since then LIGO has reported two other events and a marginal candidate. These discoveries have heralded a...