A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

Mercedes Burns has previously received funding from the National Science Foundation. An Asian water dragon hatched from an egg at the Smithsonian National Zoo, and her keepers were shocked. Why? Her ...

Reproduction is central to survival, but it may come at a hidden cost. In a new study, which drew on zoo records from more than 110 animals around the world, researchers found that blocking ...