Lasting

Critical care carers insert an endotracheal tube into a patient with coronavirus disease (COVID-19) in the intensive care unit (ICU) at Sarasota Memorial Hospital in Sarasota, Florida on February 11, 2021.Shannon Stapleton | ReutersSome…

In March of 1970, Martin Gardner opened a letter jammed with ideas for his Mathematical Games column in Scientific American. Sent by John Horton Conway, then a mathematician at the University of Cambridge, the letter ran 12 pages, typed…