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.
Nearly 1,000 more people died in Puerto Rico after Hurricane Maria It's official. In the 40 days after Hurricane Maria hit Puerto Rico, at least 985 additional people died, when compared to the same period in 2016. And if the entire months of September and October are included (since Hurricane Irma also passed through the island days before Maria), the figure rises to Thu, 7 Dec 2017 23:25:42 Miami Herald