Key points A 28-year-old man with cocaine and alcohol use disorders presented to the emergency department with a 2-month history of worsening shortness of breath, orthopnea, and fatigue. His medical ...

My late father, deaf since early adulthood, introduced me to the burden of auditory loss. His severe deficit resulted from a dire combination of army service as an artilleryman in the Canadian Armed ...

See related research at Key points In December 1952, emissions from multiple sources created a thick haze in England, an event known as the Great Smog of London. [1][2] This event, which resulted in ...