Cutting off reproduction — from birth control to castration — consistently adds years to life across species, even humans.

Blocking reproduction through contraception or sterilization increases lifespan in both male and female mammals across more ...

A new study published in Science and led by Monash University biologists reveals that the energy cost of reproduction is far greater than previously believed. The research, led by Dr. Samuel C Ginther ...

How do animals decide when to fight and when to walk, fly, slither, or swim away? Most research on animal conflict has focused on the short-term costs of single interactions, but a pair of behavioral ...