Life expectancy across 117 mammals was increased by hormonal contraception and surgical sterilization in new study.

Hisle, S.D. — Katherine Goodlow is only 20, but she has experienced enough to know that people around her are dying too young. Goodlow, a member of the Lower Brule Sioux Tribe, said she's lost six ...

Are you thinking of adopting a pair of guinea pigs? Taking on a new pet is a huge commitment, and one of the first things we should consider is lifespan. So, how long do guinea pigs live? You’ll be ...