Science Magazine - One Issue 

T. Rex Tally - A total of 2.5 billion oth the giant predatrs ever lived

Versatile vaccines against the next  cio rio n a v i r u s  threat

Three-way quantum networking

Pages 213-312

Cover: Tyrannosaurus rex prowl a Cretaceous coast. By using the rich fossil record of T. rex, including its body mass, growth and survivorship curves, geographic range, and geologic longevity, together with the relationship between population density and body mass among living animals, it is possible to ascertain how many T. rex ever roamed the planet and to estimate the fossil recovery rate for this species. See page 284. Illustration: Julius Csotonyi

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