The term half-life describes how long it will take for half of the atoms to decay, and is constant for a given isotope. The curie the unit of measure used to describe the radioactivity of radioactive material. (1C = 3.7 X 1010 disintegrations/sec)
Maria Callas, 53, Is Dead of Heart Attack in Paris. By RAYMOND ERICSON. Maria Callas, the soprano whose intensely dramatic portrayals made her the most exciting opera singer of her time, died of a heart attack yesterday at her home in Paris. She was 53 years old.
In early 1955, Maria died of cancer, and later that year Huxley published his next novel, The Genius and the Goddess. In 1956, Huxley married his second wife, Laura, who would later write a biography of their life together titled This Timeless Moment (1968).