Believe it or not, but ducks have a reputation for the unexpected: bizarre and intricate mating anatomy. According to ...

Scientists have uncovered a previously unknown cluster of brain cells that may help explain differences in social behavior ...

Reproductive disorders are diseases involving the reproductive system, including reproductive tract infections, congenital abnormalities, cancers of the reproductive system and sexual dysfunction. A ...

A new study suggests humans belong in an elite “league of monogamy,” ranking closer to beavers and meerkats than to ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Lea Uradu, J.D., is a Maryland state registered tax preparer, state-certified notary public, ...