Leon Morton Jaroff was an American science writer and editor. He is credited with convincing Time Inc. to publish the science-based Discover magazine, of which he was the founding editor. After four years, he left Discover for an editor's position with Time Magazine. Jaroff's medical, scientific, behavioral and environmental stories were featured on Time's cover over 40 times. His 1992 Time cover story "The Iceman's Secrets: the discovery of a frozen Stone Age man yields new clues about life in 3300 B.C." ranked second in overall sales for that year. Jaroff also wrote The New Genetics: The Human Genome Project and Its Impact on the Practice of Medicine.

Discover is an American general audience science magazine launched in October 1980 by Time Inc. It has been owned by Kalmbach Media since 2010.